On Mon, 14 Aug 2006 06:12:08 GMT, "Chuck" wrote:

Someone said that 5/16 inch cables are known to be
troublesome, have a "memory" and don't like to play well when used with
small sheaves. This is really bugging me.

If the cable has too much "spring" in relation to cradle weight it is
possible to envision something like that happening.

Does it happen with a boat on the cradle also?

If not, you can probably solve the problem by adding some extra weight
on each side of the bunk boards. An inexpensive way to do that would
be PVC pipe filled with concrete and/or rebar.