Thanks Rick. A flatbed set up is desirable. You have given me much to think about...

The old EZLoader trailer I have has very narrow rails which causes the 2" sq cross bars to hang out over 2 feet. Unlikely I would be able to remove them and expect the marine ply to work unsupported. I am planning to mount them under the frame rails to lower the boat.

What I think you are telling me is the official cradles are unnecessary and I may be able to use large wood/carpet pads for a more universal design.

Thanks again - Dean