I have a Avon 3.41m rib with 25hp Yamaha 2 stroke. In many ways similar just older to what you are looking at. I think a 15hp is too small if you intend on having more than one person. I would go bigger if you can. The boat looks huge in my garage and tiny on the water. They say they can handle 6 foot waves which I'm sure they can but do remember they are just a small boat with a mid V hull. I had a honwave 3.2m sib before and this baby rib is so much better at cutting through light chop. A much more comfortable ride than the sib.