There's a few "huge engine in small SIB" videos on youtube
l imagine it's a death trap. My Zodiac 2.8m is rated to an 8hp, l've got a Tohatsu 9.8 on it and at WOT (over 18mph) it feels less stable and the steering becomes less responsive.
l wouldn't like to try it with a larger motor, and that's only 2hp over the rated hp for the boat.
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