What do you know, I DO know how to do them.

Although about an inch and a half is as close as my ass comes to the floor no matter what my stance. My lower legs are too long, I guess.

Regularly doing anything higher can screw up your knees but good. If your knees are screwed up then A2G's may just be the remedy. But as a rule if you stop anything involving your knees before they are either fully bent are straight then you are asking for trouble. The stess that is put directly on the joint at that point is much, much higher than when it is in motion. The same thing goes for leg extensions, etc.