If they're like every other glued together hull(ndq) some acetone will work but it takes a while and is a huge pita to do properly, I normally get frustrated half way through and start slicing with exacto. Anyways with acetone or some other harsh chemical u can actually soften the abs plactic of the boat(which isn't good), so becareful and more patient than I am. Properly, is to be watching all the time and literly put on a drip or two, then start working the glued area apart after 5 min or so. Running a large area doesn't seem to work, the acetone seems to ruin the plastic if on too long etc. Essentially bring some beers but not enuff to say screw it and finish the rest o boat by forcing apart.

Others might have better ideas, i know it works but like I said u need patience, more than Ihave.