We have the same problems here in upstate New York. The liability issues have taken a forefront standing with ALL ranges here. One of the things some ranges have done, with similiar layouts, as yours, is to construct target stands out of 2 x 3 lumber. These stands raise your target so your bullets would impact the berm at the same point, as if you had placed your target on the 100 yard backstop. They are easy to construct, light, and portable. If you're handy, you could score some points with the Board and Officers by offering to make some for the members to use. 2 x 3 lumber is fairly cheap, and you can use cardboard stapled across the uprights, so the members can tack, tape, or staple their target at the right height/position. As a side note, your can get free cardboard from any shop that sells bicycles. It saves them the cost of disposing of the cardboard (bicycle boxes), and it offers a free source of supplies for the club. Food for thought. Joe