Same thing, you find out what works for you. When I was extending I typically would go for an hour, take it off and do some firegoat rolls and put it back on. Other guys can go for longer sets and just stay in the gear. Some guys have better blood circulation than others- in the context of an extender that means some guys need to apply a large amount of compression to stay in place at the target traction setting and other guys stay in easier. If you are one who has to strap in tight you want to pay attention to how your glans is responding. If white and cold and/or numb will want to take it off and massage some fresh blood in.
Initial: 7” BPEL; 6” NBPEL; 5.25” - 5.5” MEG
Current: 7-7/8” BPEL; 7-3/8” NBPEL; 8.5” BPFSL; 6.5” MEG; 6”x5” Flaccid.
Goal: Improved/consistent EQ while managing ED. Secondary: maintain current stats.