ORIGINAL: crutch
I have a couple. I like them, though double lunged a doe at 22 yrds. Could see the bright orange light hit the spot, but when it passed through and hit the ground it was off? I think that maybe it scraped a rib or something enough to push it back? Also like shooting them right before dark at target.
Haven't really shot them enough at live game to see how they perform.
I have had the same problem, I shot a doe this year at about 15 yards, went thru both lungs, and the heart. Saw the bright red light right up to the point where it came out the other side of the doe. I thought the same thing, I think it pulled back out, and the light shut off when the nock went thru her. I think they are great tho. Every other time when I have shot them, they make it real easy to find your arrow. I give them 2 thumbs up.