For a Wave trailer, I recently purchased a small 4x8 open utility trailer from Menard's for $500 and put four 7 foot planks of wood decking across the top of it (front, back, 1/3 and 2/3 way between). Actually, to match the slight rocker of the hulls, I put a double thickness on the front. And I put one plank vertically across the back edge, to give the boat something better to run into. Then I used cheap marine carpet (also from Menard's) to cover the "arms" that stick out beyond the trailer. The boat slides easily onto the planks, and rides nicely above the trailer. Just to make sure to boat couldn't move sideways, I cut up the leftover deck pieces to make 45 degree chock-blocks and attached them to the planks, at the inside of the hulls. I used one big bolt on each side of each plank, so they're easily removed, for use as a utility trailer again. The trailer has a mesh floor, so I can bungee down my rudders, sail bag, life jacket, etc... The comp-tip slides in from the front, so Bob is over the tongue, and the metal mast section gets bungee'd to the planks between the hulls. The Wave is balanced on the wheels, so it's as easy to move as if it were on cat trax. Works Great! I'll post photos if anyone wants.