"Maule Driver" wrote in message . com...

Aviation Consumer tests resulted in the Claw failing in one case by pulling
out a large plug of dirt (presumably funnel shaped). When pulled at an
angle, it failed by breaking one of the arms. Failure occurred at 500lbs
(straight up) and 475lbs (at unspecified angle). They stressed that tiedown
strength varies significantly by soil type.

That's not a very good recommendation. 500 lbs is hardly enough.