Yeah, that's how I do mine, because there's no way you can keep mud and water out. It's better that it drain out than stay in there.I have two formans with the single rear drum brakes. The have both gotten water in them that didn't drain and caused serious problems. I'd rather replace brake shoes than everything from the axle housing outward. I'm thinking of running them with the drain plug out (or at least drill a hole in it) since water always seems to get in but not out. thoughts?? thanks.