Re: Speed of boat?
Since no one else has answered your question, I'll take a stab.
My previous experience with the 15 footer and a 50 horse yielded 35-37 mph. Since this is a shorter and narrower boat and HP is less, I would make an educated guess of 33-35 mph if it is propped right.... Obviously to fine tune it make sure it is at peak RPM @ WOT and make sure your Merc's height is perfect to get the most out of this boat....
BTW, if it is one of the newer Tohatsu built Mercurys, that 30 will perform extremely well..... You will be pleased with that combination.