For the new, high-tech, light weight boats you should not use rollers at all. In that case you need cradles or you will definitely damage the hulls.

I tried something that has worked out really well. I took off all the rollers, etc. and bolted on two 4x8 plywood pieces and made a flat bed out of it. Then I went to the local carpet store and rummaged through the trash can and covered the flat bed with carpet.
It is perfect for the Waves. Neat part is you have the entire area below the boats to store stuff --- just have to tie them down well.
Rick


Rick White
Catsailor Magazine & OnLineMarineStore.com
www.onlinemarinestore.com