I've finally finished my boat - it's taken 2 months (although not solid work, on and off) to covert this:
into this:
I made a quiet engine mount myself out of angle aluminium and silicone tubing - it works well. I also made all the brackets that hold the fuel tank, servos etc. in place. The hull has been reinforced with fibreglass, inside and out, to make it more durable. At WOT it can manage around 20 knots - not bad for the hull design.
Parts list: ASP .12 engine, MVVS manifold, MVVS throttle pipe, HPI fuel tank, ACOMS 2ch radio system, 35mm waterscrew prop, plain propshaft (I made a self-lubricating mechanism that feeds oil into it to prevent wear), Tamiya air filter and probably other stuff I've forgotten.
So, people, what do you reckon? I havn't got any vids or pics of it in action yet, but I'll get some soon . . . if I can find a place to host the vids.