When the original guy owned NOggintops, I'd have voted for him. I have trouble getting hats that fit... He even sent hats on "approval" to try just to help. Not sure about current owners.
What I liked about the "crusher" I got was it had a very narrow "brim" so that it didn't interfere, and it was a soft felt "crusher" so it gave way to the string on draw.
Given Whip's rep, I'd now opt to go with him and ask his help to find what works... that small width brim thing really helped me!