Johnny:
My pleasure. What's really cool about short-rack banks is that on a coin-op barbox, after the coin drop and you've racked the balls, you have 6 balls left to use for "spotting." For a fair banker, that should be enough. It might not be enough for those just beginning to explore the game, though, because remember -- any shot that pockets but doesn't go in CLEAN spots back up. And a player owes a ball when he/she scratches as well.
(TIP: The total number of beads slotted for successful banks for both players + the number of balls still left on the table should always equal "9".) So a couple bangers will use-up those 6 spare balls pretty quickly before someone actually gets to "5".
That's why a good player such as yourself can really get a lot of bang for your buck with short-rack banks. Yes, I know you own your barbox and thus there's no coin-drop, but when you walk into an establishment with coin-drop barboxes looking for some action... you get the idea. The only adjustment you personally might have to make is how the rails/cushions are reacting compared to your barbox's Ridgebacks.
And barboxes tend to be VERY GENEROUS in accepting bank shots -- much more so than 9-footers. Barboxes usually don't have the problem with spitting balls out, unless the pockets on the barbox are so beat-up that the chiseled faces on the throat of the pockets are no longer flat, but curved from years of players slamming balls into them. Watch out for these tables -- don't play short-rack banks on them.
Here's a good short description of the rules, in case it's helpful:
http://en.wikipedia.org/wiki/Bank_pool
Enjoy!
-Sean