I like to keep the rear rollers for loading more easily, but once on trailer I then have small wooden 1x6' piece of wood about 10-12" long for support, that I slip underneath the hulls once its on the trailer. I also make two small pieces across the bottom side of these "pads", so they don't slide off the rollers when trailering. Instead of the front rollers, I have pads like on the rear, but they are permanently mounted where the rollers were. I keep the upright part of all 4 rollers in place, to keep hull from sliding off the side.