Anybody build/built a gas RC boat?

[sublauxation]

My 14 year old is looking for a summer project and came up with the idea of building a 4 ft RC boat. We're thinking of using a weed whacker engine or something similar around 26-30CC in size. The boat will be made with plywood.
Anybody here do anything similar?

 

[Scott Danforth]

built a few. co-worker and his father built many, they modified weed whacker motors to be water cooled, and even built superchargers for them. now days you can buy water cooling kits for motors.

have a retrieval boat available.