Just had my first day out in my 3.6m yamaha ali floored sib with 20hp 2 stroke 2005 engine.
15hp would be plenty, and I like speed............
with 3 or 4 (men) people in the boat things maybe different, and more power maybe needed. But with a modest load, 15hp mercury will be perfect...
Told 2 stroke power in more than 4 stroke, but modern 4 strokes are fairly light anyway.
But seen youtubes of 2 strokes winning at rug of war...... with same hp...
I am no expert at all.....
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