I had 14' lund rated for a 25hp and it did fine with that much power. I now have a 15' smokercraft rated for 40hp, I have a 25 yamaha on it and it does great. I wouldn't put a 40 on your Lowe but personally think a 25 would be fine. My thoughts on the 40 are how heavy it is and how it would affect the handling more than the 28hp you figure you'll get with a jet.
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