Second Thoughts on Project. Need Lots of Guidance

Quadzilla724

Cadet
Joined
Aug 5, 2012
Messages
9
Hi, as an avid fisherman with a small budget, I decided to take on a project to convert an aluminum boat into a bass-boat with decking, seats, etc. I found a good deal and ended up buying a very nice 14' Alumicraft with a newer trailer, 8HP Mariner engine, 48# Minn-Kota Trolling motor, clamp on seats and a marine battery. He was asking $800 for everything. I offered the guy $625 and he accepted.

I then went to purchase the items to modify the boat. I bought 5/8" treated plywood, marine carpet and a pair of pedestal seats to start. This boat has 3 aluminum bench seats with one small platform at the tip. My intention was to run decking from the tip to the second bench, leaving the last bench and space between open. I plan to deck the floor of the last open space and last bench, as well as the small area at the transom later. (BTW, after reading past posts, I'm prepared to get yelled at for buying treated wood)

I have a multitude of questions about the best way to do this for strength, stability, functionality and most importantly, good looks :p but before I do that, I have a more pressing question...

I've gotten as far as cutting the deck out and that's it. Since the start, my son and I have taken the boat out twice, removing everything, of course. One thing I noticed is this boat rolls badly; it's 48" at it's widest point. It was nerve-racking standing on the floor and I didn't even attempt to stand on a seat. Now I'm extremely concerned that having pedestal chairs (11" posts) will make this craft dangerously unstable and unusable by making the center of gravity even higher. FWIW, I weigh around 215 and my son weighs about 175

Should I get rid of this boat and buy a jon boat instead or will all that added weight from the lumber stabilize it enough to make the project work? I plan to shore up the deck with 2x4 legs cut to fit the contour of the hull. I don't really have a lot invested yet and if I decide to change course, I'm only out a $30 sheet of plywood (assuming swapping the V-haul for a flat-bottom is a wash).

That right now this is the big question. Once solved, I'm sure I'll be on here constantly asking for advice and tips as the project progresses.

Some other facts that may or may not be relevant: I'd like to NOT secure the deck to the boat so it can be removed for cleaning and drying. I plan to add hatches in each space for storage. Also, from the looks of things, the forward pedestal seat would be bolted to the plywood over a space (we'll discuss reinforcement later) while the aft seat I'd like positioned right were the back bench is which would have plywood/carpet covering it.

I'm new to this forum, but after reading many posts here, I'm sure I'll get tons of help, so thank you all in advance. My son is helping me with this project and we are both very excited about it and I'm glad I have a resource like this to help us along.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Second Thoughts on Project. Need Lots of Guidance

The added weight placed higher up in the boat will make it even more unstable plus that is a substantial amount of weight for a 14 footer (and a very narrow one at that). There are lots of raised deck 15 and 16 footers with and without consoles that would make a much better fishing boat if a raised deck is high on your priority list. The other option is to keep what you have bone stock. I've fished from 12 foot tinnies in my early fishing days and caught as many as I did with my more upscale boats.
 

Quadzilla724

Cadet
Joined
Aug 5, 2012
Messages
9
Re: Second Thoughts on Project. Need Lots of Guidance

The added weight placed higher up in the boat will make it even more unstable plus that is a substantial amount of weight for a 14 footer (and a very narrow one at that). There are lots of raised deck 15 and 16 footers with and without consoles that would make a much better fishing boat if a raised deck is high on your priority list. The other option is to keep what you have bone stock. I've fished from 12 foot tinnies in my early fishing days and caught as many as I did with my more upscale boats.

That's what I was afraid of. I really want the raised deck mainly for comfort and better line of sight to the cover I'm fishing in. I'm taller and right now, I feel like I'm sitting in the water. That's ok for when I go crappie fishing, but I don't like casting for bass from that position. I can't make out the weight limits to the boat, but I assume it accommodates at least three adults. I figure the lumber will add 100-150 pounds, so hopefully with two of us, it will not breach the capacity. I was even hoping to have enough weight left to add something to the floor of the boat to increase stability.
 

southkogs

Moderator
Staff member
Joined
Jul 7, 2010
Messages
14,971
Re: Second Thoughts on Project. Need Lots of Guidance

Welcome aboard!

To be honest ... it's just not designed to handle that kind of conversion. Weight and CG are both going to be effected, which will toss stability and performance all over the place.

Likely, you're really going to be disappointed with that 8HP after any type of conversion too. Overpowering to a 15HP or something will exacerbate the problems. Don't know how long until it really leans toward being completely unsafe ...
 

Quadzilla724

Cadet
Joined
Aug 5, 2012
Messages
9
Re: Second Thoughts on Project. Need Lots of Guidance

Welcome aboard!

To be honest ... it's just not designed to handle that kind of conversion. Weight and CG are both going to be effected, which will toss stability and performance all over the place.

Likely, you're really going to be disappointed with that 8HP after any type of conversion too. Overpowering to a 15HP or something will exacerbate the problems. Don't know how long until it really leans toward being completely unsafe ...

No worries. I'm here for the honesty. Especially now. Like I mentioned, I'm not in too deep yet and I want to find out the best route to take before I get to that point. My son just found a 12' flat-bottom available and I'm trying to get the width of it from him now. Searching around it looks like there are plenty of modifications on this type of craft, assuming it's wide enough.

The lakes we fish are generally smaller and some even prohibit gas engines, so I'm not too worried about speed at this point. I'll probably start craving that as I get use out of this one.
 

Bob_VT

Moderator & Unofficial iBoats Historian
Staff member
Joined
May 19, 2001
Messages
26,065
Re: Second Thoughts on Project. Need Lots of Guidance

Hi, as an avid fisherman with a small budget, I decided to take on a project to convert an aluminum boat into a bass-boat with decking, seats, etc. I found a good deal and ended up buying a very nice 14' Alumicraft with a newer trailer, 8HP Mariner engine, 48# Minn-Kota Trolling motor, clamp on seats and a marine battery. He was asking $800 for everything. I offered the guy $625 and he accepted.

I then went to purchase the items to modify the boat. I bought 5/8" treated plywood, marine carpet and a pair of pedestal seats to start. This boat has 3 aluminum bench seats with one small platform at the tip. My intention was to run decking from the tip to the second bench, leaving the last bench and space between open. I plan to deck the floor of the last open space and last bench, as well as the small area at the transom later. (BTW, after reading past posts, I'm prepared to get yelled at for buying treated wood)

I have a multitude of questions about the best way to do this for strength, stability, functionality and most importantly, good looks :p but before I do that, I have a more pressing question...

I've gotten as far as cutting the deck out and that's it. Since the start, my son and I have taken the boat out twice, removing everything, of course. One thing I noticed is this boat rolls badly; it's 48" at it's widest point. It was nerve-racking standing on the floor and I didn't even attempt to stand on a seat. Now I'm extremely concerned that having pedestal chairs (11" posts) will make this craft dangerously unstable and unusable by making the center of gravity even higher. FWIW, I weigh around 215 and my son weighs about 175

Should I get rid of this boat and buy a jon boat instead or will all that added weight from the lumber stabilize it enough to make the project work? I plan to shore up the deck with 2x4 legs cut to fit the contour of the hull. I don't really have a lot invested yet and if I decide to change course, I'm only out a $30 sheet of plywood (assuming swapping the V-haul for a flat-bottom is a wash).

That right now this is the big question. Once solved, I'm sure I'll be on here constantly asking for advice and tips as the project progresses.

Some other facts that may or may not be relevant: I'd like to NOT secure the deck to the boat so it can be removed for cleaning and drying. I plan to add hatches in each space for storage. Also, from the looks of things, the forward pedestal seat would be bolted to the plywood over a space (we'll discuss reinforcement later) while the aft seat I'd like positioned right were the back bench is which would have plywood/carpet covering it.

I'm new to this forum, but after reading many posts here, I'm sure I'll get tons of help, so thank you all in advance. My son is helping me with this project and we are both very excited about it and I'm glad I have a resource like this to help us along.

Welcome to iboats. Do not use pressure treated plywood in an aluminum boat. The chemicals will leach out and attack the aluminum. You can use exterior plywood or marine plywood (same glue in both) but not PT. We have documented proof of the chemical attacks and it eats aluminum.

Center of gravity and stability is always an issue. We have a boat that was transformed in the completed project section where the builder purchased scrap aluminum tubing instead of 2 x 4's.

We have hundreds and hundreds of pages on aluminum boat re-builds. I will move this to the restoration section and I would suggest that you look at the listing of tips here http://forums.iboats.com/showthread.php?t=288451 and look at the STarcraft restorations (mostly aluminum boats).

Once again welcome aboard.

Look for at least a 14' boat since a 12 footer gets cramped with 2 people fishing ;)
 

jigngrub

Fleet Admiral
Joined
Mar 19, 2011
Messages
8,155
Re: Second Thoughts on Project. Need Lots of Guidance

+1 on the pressure treated plywood decking, it's very bad for aluminum.

It sounds like you boat is a 1436 (36" wide at the bottom) and they're not very stable.

You could mount swiveling seats to your benches for more comfort, but unless you're a good surfer or skateboarder pedestal seats will be unstable.

Adding modifications to your boat will increase the weight and slow that 8 hp motor down noticeably.

If you're going to mod an aluminum boat, buy a wide boat... 48" or more at the bottom and 14' long would be a minimum for the added weight.
 

jcchappy

Seaman Apprentice
Joined
Jun 12, 2012
Messages
44
Re: Second Thoughts on Project. Need Lots of Guidance

I have a 14' by 32" flat bottom and a 14' by around 50" or so semi v both aluminum. The flatbotton rolls easily side to side and I made some folding stabilizers that attach to the sides. It helps but really the only answer is a wider boat. With the stabilizer I can walk around some but not much and if someone else is in the boat I just forget about even standing. The semi v 14 footer is alot more stable I haven't used it much yet for fishing besides just checking trotlines and jug lines but I can tell it is alot more stable. I don't recommend the stabilizers. They do work and didn't cost me anything but a piece of pvc drain pipe but when the boat is under way they tend to spray water up into the boat which can't be a good thing. 1339814993505.jpg1339815083158.jpg They fold up against the side and are pinned in place when not in use then you pull the pin and they fold out to make the boat basically wider.
 
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