. Speed is main problem. Good practice is to nurse balls along the rail. Hit slowly, soft and don't really stroke the cue. If you are very close to ob stroking will probably double hit ob. Try moving the ob just 1 in. Or less. From corner pocket to side pocket how many times can you nurse ob? First effort will be about 6 or 7 times. When you can go 10 or more times your getting good. Get very close to ob with cue and just touch it. Pretty tough at first. Remember you always must make good hit.On many occasions, a great "safety shot" could be achieved by sticking an OB against a rail behind another ball.
How can I consistently make the OB stick to the rail?
Are you saying to hit the rail for a legal shot each time, or just hit the ob??