In general, you want shiny or higher-grit finishes, higher RG values (not less than 2.5), pearl reactives. But there are a lot of things that go into it.
Surface prep is something like 75% of the reaction characteristics of the ball, so it's more important to get something polished than higher RG or pearlized. In Columbia's parlance, lower Hook-in-oil values will generally mean more length since the ball is skidding rather than grabbing in the oil.
The Backyard Bully is the lengthiest of the Bully line, I believe. If you want longer still, you'll need to look at their mid-price line (or the Action Packed, but I don't think it's quite out yet and I'm not sure what it's supposed to do and it's got the same cover as your BB anyway). The Messenger Ti Pearl, the black-and-gold one, should give you a later break than the Backyard Bully, and, being a little weaker overall, may give you an option for lighter-oiled lanes, maybe the third game of league or later tournament blocks if the BB is too strong.
Longer isn't always better. Too long and you can easily throw it through the breakpoint, and as I said above, if there aren't dry boards to grab downlane, it'll just keep skidding. As a complement, a different look than your BB, maybe the Action or original Bully would do the job. Both should start up sooner and have a smoother read throughout the lane.
SH