Well keep this in mind. How many folks fishing with you, kids or adult fishermen, do you want a trolling motor for the creeks.
Low sides and no bow rail are a must for trolling motor.
Kids casting rattle traps need lots of room.
Two adults, two tackle boxes, cooler, life jackets, rods fill up a boat fast. Low sides can be a little scary in the sound on a winter day but anything with high sides is a pain in the creeks.
I don't think size is what you need to be thinking about but sinse that was your question...17' with 2 adults.