Basically, the idea is to rack a number of balls (e.g. 9 or 10), break, take ball-in-hand on the lowest-numbered ball on the table, and run out what's remaining in rotation (or, playing the "Ghost", until one has won or lost a game, then re-rack and start over).
The "Ghost" wins each time one doesn't run out. Scratch on the break playing the "Ghost" is an automatic loss of game. Do this as a race to e.g. 10 games. Once one starts beating the "Ghost" consistently, do this without taking ball in hand.
An alternative exercise that allows a somewhat more fair comparison to others is to do the same starting with a rack of 9-Ball or 10-Ball, and for e.g. 10 straight innings, again with ball-in-hand, run as many balls as possible until a miss, and count (= for a maximum of 90 or 100 balls pocketed). Note there is no "game ball" in this scenario! Try to equal or do better than one's average, as well as possibly break one's record, or for advanced players, play a perfect 10 innings in a row.
Advanced in this context means, starting with a 10-Ball rack, to score 70 and over. Championship calibre players should be able to score 70 even on a bad day, and average 85 and over. As I usually (jokingly!) tell students: aim at scoring at least 90 or go to bed supperless…
Additional "rules" I recommend is to spot all pocketed balls if the cue ball scratches on the opening break (= basically a penalty and reminder to never ever scratch on the break). Also, for advanced players, I recommend doing the same without ball-in-hand after the break.
As an add-on to the latter (without BIH), when one has no shot, play a safety. If the player successfully manages to hide the cue ball from the lowest-numbered object ball on the table, he or she "buys" him- or herself another break (one more inning). Or course, advanced players would be wise to judge the quality of the safety: if the kick or jump is better than even money, forget about it. Practice is useless unless one is honest with oneself.
Greetings from Switzerland, David.
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