I pulled my boat off the trailer recently and found some gel damage on the hull bottom
where the boat sits on the trailer bunks.
The bunks, it turns out, had the bunk bevel cut at too steep an angle (probably 30*)
and had a sharp sawn corner at the top of the bevel. The damage to the bottom was
caused by a 2800 mile round trip to Lake George last June.
So today, I cut away the rear 5' of the bunk carpet and sanded the bunk bevel to a
better angle and included a large radius at the top transition of the bevel and the top
horizontal bunk surface.
I then took the trailer to the local marine shop to have the bunks recovered.
In the pics below, you can see the carpet was cut on both bunks, and at the forward
end of one of the pictures, you can see the original bevel and also my new configuration.