Zig-zag Bumper Bowling Record?

I went bowling at a newer bowling ally a couple of nights ago. Little bumper bars raise, if you want them to, before your turn to bowl. This is fab so as to avoid a night in the gutter. On my best try I managed to send the ball zig-zagging with a bumper count of 5. (That is, it hit the bumpers a total of 5 times). Has anybody beaten this? If so, please let me know how.
I'm sure there is some complex relationship between angle, speed and energy absorbtion by the bumpers. I would imagine a talented person could reach a bumper count of 7, but beyond that might be impossible without the ball stalling in the alley. Please let me know otherwise.