I have a 22 foot Crestliner walk around cuddy, 305 chevy I/O.
It is an excellent boat for gas milage. I use a 15hp kicker which mounts in the crestliner kicker transom, without any brackets, and attaches directly to steering wheel without any additional tie rod links. Boat is good on open water, but a handfull in small harbours like Sturgeon Point, when there is a stiff breeze. Boat likes to drift sideways when windy because the bottom of the hull is very shallow V. It is not bad on calm days. All crestliner models have the same problem, and I'm guessing all aluminum boats with a lot of free board, do the same thing.
Aluminum boats also trailer easily with any 1/2 ton pick up or SUV, without sucking too much gas. That's a big deal thses days.

My brother has an 18 ft aluminum Sea Nymph, which I have fished from many times. It handles rough water well, and handles well in the wind, but it is much smaller than my boat nad has less free board.