You should buy my boat. Just lowered the price...Save all the money you'd spend fixing an old boat up and use it to make some horsepower.
Ill let the Southwind Bro's tell you all about these boats, My understanding is that they need big horsepower to get to a point where the tunnels are working well. Solid boats and are safe. Check out the placecraft thread, BP posted some informative stuff about them in there...