check it out!-Hull "hook" fix in aluminum-

[jake3020]

check out the pics below of the damage to this hull and the "hook" it has created.
i've been through the many props, jackplate, dance and just finally learned to live with the terrible ride performance and bow plowing. (and wet rides that come from it).

I've always known about this damage, but never put much thought into it. till one night reading about it here on the forumns.

So i ask the experts. Does the type of damage shown below cause this type of ride?
I've been told by other PartyDeck owners that they are able to acheive Upper 30's MPH with a similiar set up and don't experience the same type of ride that i have.

SO I'm going to fix this problem. The question is how? How would you guys go about doing this?
Getting to this area from the topside is next to impossible. I would really like an option from the bottom side.
Should i rivet on some alluminum plate and then use some of the products i've read about here in the forums that cure hard and then can be sanded smooth? any combination of products that may work?

BTW, the problem is the similiar on both sides, but the other side is not this extreme.
BTW, when i bought the boat it hung over the trailer bunks. so while it looks like the previous owner hit something big on this side, i believe the other side was caused by the trailer set up (this has been fixed).

i'm very handy, so bring on the suggestions. i'm looking for ideas other than "take it to a weld shop and let them fill and grind". and just want some reasurance that the solution will hold up a little while.

overal pic of problem
http://i796.photobucket.com/albums/yy246/DjMcClenny/boat/IMG_2377.jpg

close up of transom
http://i796.photobucket.com/albums/yy246/DjMcClenny/boat/IMG_2374.jpg

another closer damage pic
http://i796.photobucket.com/albums/yy246/DjMcClenny/boat/IMG_2375.jpg

straight edge pic
http://i796.photobucket.com/albums/yy246/DjMcClenny/boat/IMG_2373.jpg

overall pic of boat (to get you an idea of rear pod condition)
http://i796.photobucket.com/albums/yy246/DjMcClenny/boat/IMG_1177.jpg

 

[Bob_VT]

Re: check it out!-Hull "hook" fix in aluminum-

Aluminum hull? I would sand it so it is bare and roughed up and use marine tex. You can shape it and it will last. That is how I would do it...... I would not add aluminum or drill through in any place. If the marine tex ever cracks or falls off it will be very minor and easy to fix.

I believe the toughest part of the repair will be flipping the hull since I would never want to attempt that from the underside.

 

[jake3020]

Re: check it out!-Hull "hook" fix in aluminum-

Bob, I'm liking the way that sounds. But flipping the hull is out. Can this stuff be mixed in a way that will allow overhead application? Or create a "mold" tight to the hull and inject marine tex into it?

 

[jspano]

Re: check it out!-Hull "hook" fix in aluminum-

it is pretty thick and can probably be done over head. you would have to do it in sections and rough up the cured marine tex before the next app.
i know you don't want to drill but how about a reverse hammer and the close rivet the holes?????

 

[Bob_VT]

Re: check it out!-Hull "hook" fix in aluminum-

Flipping will aid in sanding and getting the hull "true" and doing a proper repair.

 

[Last Mohican]

Re: check it out!-Hull "hook" fix in aluminum-

Could you not use a stud gun and slide hammer to pull a lot of it out? I know they use them in automotive repair, Just not sure if there is a stud gun suitable to weld studs on aluminum.

 

[Bob_VT]

Re: check it out!-Hull "hook" fix in aluminum-

Could you not use a stud gun and slide hammer to pull a lot of it out? I know they use them in automotive repair, Just not sure if there is a stud gun suitable to weld studs on aluminum.

will not work on an aluminum hull

 

[jake3020]

Re: check it out!-Hull "hook" fix in aluminum-

Could you not use a stud gun and slide hammer to pull a lot of it out? I know they use them in automotive repair, Just not sure if there is a stud gun suitable to weld studs on aluminum.

this damage is structural and i'm thinking a fix that involved would be more effort than this boat is worth.

on the marine tex...I assume your talking about the Marine tex Epoxy putty? http://www.marinetex.com/marinetexepoxyputty.html

if so then given the pics previous posted, how far do you guys think this product will go? The sell it in a 2oz, 14oz, and quart. I know the 2 oz won't cut it!!

and of course do you guys think that this damage could be causing alot of the bow plowing im experiencing?

 

[Last Mohican]

Re: check it out!-Hull "hook" fix in aluminum-

will not work on an aluminum hull

I found references to one that Miller makes that will work with aluminum. Looks like it was $3200 a couple years ago. Not stirring the pot, just saying apparently they are out there.

 

[Greg Mrozinski]

Re: check it out!-Hull "hook" fix in aluminum-

Jake,

Yes, that "Hook" will definitely affect the handling of your boat. It doesn't look like structural damage though. It acts like a small keel working against the other facets of your hull. Basically you need to get the profile of your hull back to the correct shape. So what the folks here are syaing is to use something like Marine Tex to fill in and re-shapen the surface. Marine tex is waterproof and strong, that is why it was recommended. Yes you might need a lot of it.

 

[Bob_VT]

Re: check it out!-Hull "hook" fix in aluminum-

this damage is structural and i'm thinking a fix that involved would be more effort than this boat is worth.

on the marine tex...I assume your talking about the Marine tex Epoxy putty? http://www.marinetex.com/marinetexepoxyputty.html

if so then given the pics previous posted, how far do you guys think this product will go? The sell it in a 2oz, 14oz, and quart. I know the 2 oz won't cut it!!

and of course do you guys think that this damage could be causing alot of the bow plowing im experiencing?

There is also a product called PC 11 which is similar and made for marine use below the waterline........ sold in qts too. regardless you will need a quart to start and I am guessing it may take 3 for the job

The bow "plowing" could be many factors. Do you have a profile picture of the boat and pictures of the motor in relation to the transom. Is it power T&T? Some plowing is also due to loading and weight distribution.

 

[Bondo]

Re: check it out!-Hull "hook" fix in aluminum-

Bob, I'm liking the way that sounds. But flipping the hull is out. Can this stuff be mixed in a way that will allow overhead application? Or create a "mold" tight to the hull and inject marine tex into it?

Ayuh,... Bob just don't like Workin' on 'is back, Reachin' Up all day....
Can't say's that I do either,....

I agree that an epoxy based fairing compound is the way to fix that hull,...
MarineTex is way to runny, 'n Expensive...

I'd think whippin' up a batch of something like Oops' peanutbutter would be considerably cheaper...
There's a myrid of fillers available,...
Micro-bubbles makes sanding easiler,..
Cabosil for thickening,..
Ground glass for strength(sands Super hard though)..

 

[jake3020]

Re: check it out!-Hull "hook" fix in aluminum-

Bob, below is a profile pic. 21' party deck

the cavitation plate is currently flush with the bottom of the keel. I installed a jack plate, tested four different prop sizes and adjusted up and down the motor for a month and finally settled on the best i could do. of course i also did all the "must do's" to elimate engine issues i.e. compression, RPM at WOT stuff. and here we are...did everything except go to a cupped 4-blade prop.

i played the weight thing. even removed all the seating in front of the helm (no change really)

original

mid-modification

current

 

[Bondo]

Re: check it out!-Hull "hook" fix in aluminum-

Ayuh,... Are ya Sure, that big dent can't be pounded back out, from Above,..??

It could make the difference between a Quart of fairing compound, Vs. a Gallon or so,....

 

[tgp***]

Re: check it out!-Hull "hook" fix in aluminum-

I would think you could press it back out w/hydraulics, like a auto body shop uses, it would need some sort of frame aginst the boat to operate the jack aginst it. Interesting task to say the least.