That's why I like one-hitters. I can't stand smoking the resin off of a screen after a fresh bowl. Well, not exactly smoking the resin of the screen but it will give flavor to your bud. If anything goes through the one-hitter, it will collect in the tube. But, there is no reason to spark a burnt-out bowl because all of the active-cannibinoids have been depleted, and lots of them by hitting the weed with the lighter.