I'm not sure if this is an old statement, but is your trailer still available? I live in Denver.
Originally Posted by puma2fish
I built a raft trailer up from a smaller trailer. Big box underneath with a door on the top to load it and access from the back when the raft is on it. I built my own roller across the whole back. I just used some threaded pipe and then slid 1 ft sections of PVC over it. I have rounded 90 deg. corners that are super smooth on the raft and it works really well. I think the pipe I got came in a 6 ft section... The key is to cut the PVC into small sections so that they can spin independently, which allows the raft to correct itself if it is not aligned straight. Actually, I would like to sell the trailer. $500...