I've had to use a "squatter" twice now and let me tell you, it is not a fun experience!!
The thing is, in ideal circumstances I can fathom the logic in the squatter, unfortunately for me though, the times that I have had to use it have been less than opportune.
Now picture yourself in a REALLY BIG HURRY (because if you weren't really in a hurry, would you choose to use this?). Anyways, with my limited flexibility and there being no handles around, I think I've stumbled on to a way to make this work.
NUDE! That's right, if you do it nude, no problems. Good luck on YOUR trials!