I recently salvaged a derelict 18' fibreglass dinghy, and an equally tired trailer. I am now working on the trailer. Rust rust rust...<br /><br />The dinghy was originally supported on thick laminated (carpet-covered!) plywood supports bolted to the trailer cross-beams. However, the ply rotted - and so did the steel underneath.<br /><br />My question is - should I look at roller (4+ bow?) supports for the boat, or should I rebuild the ply frames (and perhaps risk more terminal rusting?) Any opinions?<br /><br />Thanks in advance....