That little nitro and electric stuff is cool, but you gotta step it up to the zenoha 26cc class boats man, here's a link to 1 of mine running. Ported and piped 2 stroke's are where its at.
Bambam the boat mans race set up - YouTube
Yeah that was a purpose built straight line speed machine, no turn fins or trim tabs, its all done on the strut with prop angle, tons of set up time goes into those things.
Paulie, if your serious about getting into the boats man hit me up, we might be able to work something out for those +3+1 arms ya got...