Made 2 sets of racks out of PVC lumber from lowes today. One for my flat bottom with a small keel and a set for my round bottom used the oven to heat it up to form it to the kayak. If you look at the pic it slids into the u-channel of the topper racks, I made the back one off-center to help me load it (wife and girls are no help) I lay the front up on the back rack then lift the back of the kayak and slide it foward.
Jeff
Jeff