if you're doing this for your club, just spend the money and order the Nordic Targets from Norway, yes they cost more, but they stay usable in a friggin hurricane. Pouring rain? Target is fine, and their patches go on without issue. Massive winds? yeah they are a pressboard style of cardboard and are stiffer and stronger. Even after lots of shots, the water won't weaken them and they will be fine for days in the rain. Years actually, the Kongsvinger club has had two targets stapled up near the entrance to their club in Norway, one is shot the other not, They'd already been up for at least a year the first time I saw them in 2010, and they are still there, a little bleached, but still usable. So yeah they cost more, just up your match fee by $5 a shooter and you're covered.