My league plays on a few, shall I call them, "less than level" tables. If you try to play a slow roller, or have a longer distance shot that you want to just tap into the pocket, you run the risk of missing due to the roll-off. I have learned to play drag shots in those circumstances so that I can hit a little harder, through the roll-off, and still have the cue do what I want. They're actually not that easy if you have more than a half table distance. Trying to get the right amount of backspin, and have it start rolling forward at the right time isn't easy.