Here is a picture of the wooden
mast crutch. I laminated two pieces of 1/2 inch plywood together
and then cut out the "holders" with the appropriate
diameters. I allowed enough excess room for the carpet padding
and some extra for movement when lining things up.
I used some trailer bunk carpet,
after I put several coats of varnish on the whole thing.
I used two 1" clamps
from the marine store that matched the diameter of my stanchions.