quite a few people compare penis enlargerment to bodybuilding and if tht is right then yes you should do both hanging and manual because hanging is "isometrics" which is where u hold a weight in a fixed posistion for a certain amoutn of timne, where as manual is doing loads of reps, as well you can hit more angles with manual meaning to the left right up down BTC, a strech, v strech, target the tunica, and loads more my advise if starting out DONT hang just do manual stretches. good look on your journey
brit