What's life without a little adventure and danger?
Joking aside, I probably would feel a 12' boat would be tiny too. I may consider the Mark 2 for the extra length, but it's a lot pricier as the deal on the Mk2C is awesome.
I'm hoping both would plane with a 15hp motor. My major concern is fuel economy as I'll be cruising all around the islands. May end up with a 9 or 12 gallon tank. I figure at 1.5 GPH for a 15hp, and with 700 in total weight, I'm guessing 20mph or so? Hoping my estimates are right, but I'll do some testing before heading out to the islands.
The positive is, if I throw on the free 15 hp motor and see it's not enough, I'll sell it and probably pick up a 4 stroke 25hp.