Simple...yes that is the simplest suggestion. But what is was looking for was creative way to "maximize" each rack for practice. I appreciate all the constructive suggestions, I'll probably do a mixture of most of them. I wanna stay in the bars good graces, so I probably steer away from attempting to catch or block balls from going. I may just have to wear down the owner till he lets me rent time.
challenge someone to play you, loser pays....nowadays they'll give up after 5 or 6 losses in a row. Find another chump; errrr, opponent, and repeat until you feel good and practiced up.

our local poolhall gives you the option of per game or time on the barboxes (all brand new Diamonds), but I play on the 9' Gold Crowns = cheaper....