I tried inserting the aneros maximus backwords as someone mentioned it. Wow! It is interesting that it is more intense for me that way. I immediately going into involuntaries and good inner feelings.
I noticed that when it goes in backwords that the abutment tab hits another accupuncture point right below the tail bone. I have modified all of my models by clipping off the back tab - which for me has increased mobility.
Anyway, just wanted to provide some feedback on inserting backwords.
Nino