Stan Gosnell wrote:

They have been used, but they're unstable on land, you can't autorotate
successfully to land with them, they slow the helicopter down dramatically,
and you have to carry a hand pump around & pump for a long time when they
lose air (and they lose air regularly). Plus they mount rather low, and
the CG is higher than with popouts, so they'll roll on you even though
they're usually mounted further outboard than the regular skids. PHI has
one, for use in training, but they just aren't practical for everyday use
offshore.

Thanks Stan...... I never knew they had so many bad things going
for them.

I can imagine that fixing a slow leak in the field ( so to speak ) and
then having to pump it up by hand would be a little tedious.