msho, don’t worry too much about the slight impotence effect, I’ve had it many times from doing BTC stretchs while sittting down on my dick in my first months in PE. It seems to burst blood vessels sometimes, if you’re dick is not strong enough from jelqing and manual stretching yet. I’ve had the slight impotence effect happen twice right after doing BTC stretchs while sitting down for 5-10 mins in the first couple months of my PE, I then just took a day or two off from PE and everything returned to normal erection hardness.
It’s funny because I can now fowfer (BTC stretch) for a long ass time like 30 mins on each side of ass cheeks for up to 2-3 hours with no problems whatsoever. Lately I’ve quit doing BTC stretchs for now since I have gotten most of my lig growth (my LOT is at about 6:30) and just do hanging and manual stretching to target the tunica with warmups, and I am proud to say I have successfully made gains this way. :) Keep up the good work msho, and stay determined every day even if your measurement didn’t come out the way you wanted or you’re getting bored, psyche yourself up for PE by reading about it or trying new things. :) Hope this helps.