Ours is called the bionic deer and has 6" vitals and is usually set at about 17 yards. I've shredded more than one arrow on that thing, but that's nothing. I always send one 'junker' arrow along with my kids and tell them ONLY ONE. I guess some kid in front of them shredded his whole quiver on Steve Austin Deer. I felt really bad for his dad, but it did make me
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Those look like a hoot. I agree foam behind would be great. I know there is nothing worse than making through the vitals only to have your fletching shredded off on the edge of the hole. Good Luck, and remember...ONLY ONE!
-Brett