Hi mate. One of my boats is an Avon Typhoon, its 3.4m and is an aluminium decked SIB
.Its plated to take upto 25hp but i have a Honda 10hp with hydro foils fitted, it easily gets on the plane with one person on board. Two persons and its not quite enough to get on the plane. I would imagine with yours being a RIB, 15 hp would probably be comparable to mine, myself i would think 10hp wouldnt quite be enough.
Hope this helps, and welcome to the forum! Darren
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