im not exactly sure what youre asking, but i usually take hits when the dome fills with a decent amount of smoke. dont worry about a time limit, just unplug it when the bowl is cashed (when no more smoke comes.) you could take the left over ashes and smoke em in a pipe/bong, but theres no real point, almost all the thc is extracted in the vaporizer. you would just be smokeing the other chemicals in weed.

hope that helped.