Re: Pontoon Diameter Data
Mine is an '83 model and has 23 inch toons. I wouldn't go any less than that. I used to have a 28 footer with 19 inch toons that you had to go to the airport to turn around. Depending on what "used" means, you won't find strakes on the older models.
My general advice to anyone buying a pontoon boat is to decide what you want it to do such as water sports etc. If you want water sports, then search these forums for anything you can find on: speed, turning, lifting strakes, pontoon water glide, more horse power etc. It has been talked about more than once. I've got 5 years into one and finally got it right.