have you considered just redoing your current pontoon? Ours is a '89 26 ft Palm Beach Nicollet with large pontoons. We have a 48hp Johnson '88. Over the years we've replaced the flooring (with marine plywood), carpeting, bimini and the seats. It looks brand new yet. Seats came from a made to order place and they are awesome. My hubbie did all the work himself. That way you could get composite floor if you want. My dil made the comment "why didn't you just get a new one"? but we saved at least $10,000 over a new one that size! With the grandkids, kids, and friends around the lake we cruise with that size is just what we need. My $.02.