BTC pics and vids
I recently purchased a vac extender 3 and understand the concept of BTC but having a heck of a time finding any pics or vids. I would be doing this while watching t.v. So would want it comfortable. But the description of putting the PVC half pipe on the front of a chair seems counter productive to me since that would be moving the weight more to a SO position.
So I’m obviously missing something.
Any help thanks.