I could see it's use for the bigger shoots where there are very big backups (Matt/PA mentioned sometimes having to wait 30minutes plus at a target for the shooters to move through). If it's a day of 30+ targets with 15-30 minute waits in between each you are going to get a bit exhausted, and I'm sure it would effect your shooting. Smaller events, I don't know. I'm in shape, I lift a lot, I run, I damn sure better be able to stand around for a 3 hour afternoon. HOWEVER, take what I say with a grain of salt, as I've never shot a 3d comp, so I wouldn't know the effect of standing around for long periods of time before shooting, but to me, it seems I would do ok. What GMMAT uses his for is a nice idea though, set the bow and quiver down while you go retrieve arrows.