Wider is better. I have a 17' Koffler with a 54" bottom. I received input from many friends before I bought this boat. There is a lot more room in a 54" bottom than the 48" bottom. It is also much more stable. I wouldn't be extremely concerned with getting a 17' vs 16' but I would definately look for the wide bottom boats.

I bought a used boat, so I could learn the sticks, without worrying about putting in the first dent. Couldn't be happier with my choice.
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United we bargain, divided we beg.