I read the whole thread. I think the MAC version works the same way as the PC Version. Try RIGHT clicking your mouse/Pad to bring up the Laser Pointer. Also, don't shoot anything LACY on the girls, the Dematerializer usually sees it as NOT there and will DeRez the girl..
I'll add to that, if you're using WMR headset, you may need to bind the pointer to a controller button as it wasn't bound by default on mine. Look for my post below for the video ZnelArts responded to.
Thanks. This was indeed VERY helpful. This worked for my WMR Headset! Just out of curiosity, I still haven't discovered the key-bind for putting fingers in mouth and other orifices.