One of the best pieces of advice that at first started my head shaking was when a player I respect told me to "keep your tip in the air." At first, I thought the guy didn't know what he was talking about, but after thinking about it, and working it out, my draw improved. Many players, while stroking low on the CB will end their stroke with their tip on the rag. When I concentrate on keeping my tip in the air, I'm only avoiding bringing my tip down to the rag at the end of my stroke, and keeping the tip at the same height as the spot at which I cue the CB. I think that doing doing this, helps to get a good follow through, or better yet, avoiding ending your stroke with the tip on the rag is also a good way to avoid a premature end to your stroke.
It works for me............................................but I know several great players that end their stroke with their tips on the rag, and can still draw miles!!
dave