This is a video of my friend doing a bucket hoot a few years ago.
We went out camping at Blue Lake, Ontario and got into some trouble. It was a great time, but I don't think the park security really appreciated us that much.
Essentially for anyone who doesn't know buckets. You attach a bowl to the pop bottle lid. Fire it up, and suck it back. It works on the same premise as a gravity bong. The water jug is mostly filled with water.
It's very effective.
But I don't smoke the stuff anymore.