I go in hood about 2 thirds up to avoid undue stress on my frenulum some slack in the sleeve is nice when I intend to go hard, hood down but never pulled taught/back if I'm going slow. Sometime part of the hood slips back over my glans reducing some sensation, I try to adjust it because it distracts me. I bet I know something strange you can do with a foreskin to have a unique bj experience you have never heard of. Hood up and half chub to hard, double loop a hairband around the loose bit past the tip and pull the foreskin back with the hairband riding the outside of the foreskin, it pushes most of the blood out of your glans but you can still be hard, this means your sensitive nerve endings are closer together and some sensations can be quite a bit stronger or just different, don't leave it like that too long oxygen deprivation can lead to cell death and ultimately necrosis, when I discovered this about 10 years back I called it a white snake for reasons that will be obvious if you try it. More densely packed nerve endings equal stronger sensations. I thought about sharing a guide on /b/ some years back but figured I would probably end up responsible for a dick genocide as shitheads tried leaving it like that for too long. Fuck around and find out shit nobody wanted to know.