Best practice drill.
But then, all I need to do to get back into stroke quickly is to focus on this practice drill. It is, beyond any doubt, the best all round exercise.
The rules are simple enough:
1. All balls must go directly into the corner pocket.
2. The cue ball must touch the bottom rail, but not any other rail or other ball.
3. Start with ball in hand.
4. Pocket all balls in sequence 1-9.
This video was shot a few years ago when I was just starting to get the hang of it. I was shooting slow and very deliberately, learning how the most minute differences in where and how the cue ball is hit can make big differences in position.
Try it! If I can do it, so can you. It just takes practice...