I just used Wendy's estimate of 2.5m of rope out, then estimated her little munchkin legs would have the harness 70cm above the bolt and went from there. 3.2m of freefall until the rope starts acting on the climber, so 6m total fall is an outrageously soft catch.
There's a lot of bad ideas around. Everyone seems to think they're belaying either Chris Sharma or Dave Mcleod, and a tight catch will swing the climber back into the cave or strip the marginal gear. You're actually belaying Gavin on some poxy, ledgy ringbolted 15, with chickenheads everywhere......all that slack may not be a good idea.
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