I have never tried a shelf setup (or other) cock feather in.
Never needed to.
Would seem to me best to minimize contact.
Gap my rug rest, the sideplate up and bit, and the shelf out a little........gap on either side of the crease.
I also do not cover the shelf out all the way.
So with my mostly 12 oclock top feather position, the outer is angled down, and has minimal/no contact.
But I shoot a radiused shelf bow, that doesn't have a super wide shelf.
Have shot bigger flat shelf bows just fine doing the same, w a toothpick under the velcro.
Lots of people use the Bear packaged rest and cover as much of the shelf as possible.
That works OK, after you burn clearance by lots of shooting LOL
