You never anchor while drifting mud streaks or deep reefs. If you look at a drift line all boats are usually following a drift pattern. If you start catching fish and drop anchor you will end up in the drift line. You're not out just aimlessly drifting there is a slick, color change or just a known spot you're drifting. The courteous thing to do is drift through motor to the end of the drift line and drift back through. And repeat until limits are filled.