I'm wanting to do a backstop to allow for shooting across an ~2.5 acre section; or maybe 120 yards. I'm wanting some dirt, on which I'll plant some fast-growing crap to keep it in place. Got any educated guess as to how many dumptruck loads I'll need? I'm thinking two for a nice, somewhat large backstop. (There's a house "in the general direction" in which I'm shooting. No other option on direction in order to keep "some" distance.") :banghead: Discuss.