That's a good tip. I've said this before, I think carpet's actually the most comfy if you're going to be out there all day, but it's kind of a pain to carry around for a regular range visit so I have midway's smaller mat - I think this is the one -
http://www.midwayusa.com/product/169...vc=subv1276544 It's pretty much perfect for putting between the benches at Chabot for an hour or two, and it rolls up small and it's lightweight.