I have a 13' Otter that is set up with a 4 bay for extended trips. Although I have a few different configurations for day trips or light weight duties. I think my longest side rails are 72". I get a 100qt cooler, 17" drybox, captains space and about a 16" deck up front. I had my drybox built to fit the same bay as the cooler so they can switch up if I need to or only carry one for weight reasons. You will most likely want tall oar locks. Smashing the cooler with your knuckles is a bitch. For pure fishing trips, I put the cooler under the rower and the empty bay up front plus the existing bench becomes all deck. I stand a lot when I fish, it feels like fishing from a flats boat. Good Luck...I wish I was tinkering with a new boat this time of year.