Rock BR front rest with some modifications for smoother performance. Protektor bags, fronts are a#2 medium owl ear for hunting stocks and a custom #3 square ear with Slick Silver material for bench rest type stocks. Rear bag is a #14A Bunny ear for it's solid hard bottom feature, as 260 mentioned the soft bottom is rounded and rocks too much. Order them direct ,use the unfilled shipping option you'll have them in a week.
https://protektormodel.com/collections/all
The Edgewood's from Sinclair are very good but pricey, not sure if they ship unfilled,that heavy sand adds $'s to the shipping for sure.
I thought I read some one in Alta. was carrying Bald Eagle bags like Chucks,also a very good product.