Builder question about water displacement

[KCKracker]

Okay so read this in its entirety before jumping on the reply. I have a question about water displacement or the lack thereof our subject is an 18 ft runabout that has a motor on the back that's a little too heavy and it sits too low in the back but at the same time it's too high in the front the front of the boat is not completely sitting down in the water and displacing as much as it should be there for the boat is lacking buoyancy.
Hair lies my question... If the front was to be waited down a little bit with a bag of sand or something I know that's not just going to make it raise the back end like a teeter totter but and here's the big butt since the front of the boat would come down and it would be causing it to displace more water wouldn't that in turn create more buoyancy for the entire boat therefore raising the back end a little bit? Come on builders and math geeks what say you?

 

[MikeSchinlaub]

Come on builders and math geeks what say you?

Ok, I'm neither of those, but here's my thinking. More weight = more lower. I get what you're thinking, by lowering the front you increase surface area in contact with water so more floatation surface. But your problem is that the back is too low, not the front is high. So bringing the front down won't increase the floating ability of the rear. At best, it just levels out the boat a bit. At worst, all the extra weight to bring the front down is too much and you sink it.

Do you really need two engines at the rear?

 

[Scott Danforth]

I dont think you have a problem.

the well is a bit low on your boat. it should have been a bit higher for a slightly longer motor

however your boat is more than a few decades old. move some weight forward

 

[Mc Tool]

If you took that motor off the back and laid it down in either the middle or front of the boat ( just to move the weight ), the boat would displace the same amount of water.
If you did put a bag of sand in the front thus bringing it down the boat would displace more water but only to compensate for the bag of sands weight