So, I just looked at the bolas. They are a thrown exotic weapon that can you can trip with. Now I want to see an effective build centered around quick drawing and tripping people with bolas. Proabably returning, with some other ranged attack to hit them with after tripping, with the far shot feat for longer range.

Also, they seem to be a good thing for anyone to have. Tripping only requires a touch attack to start, so the non-proficiency penalty isn't all that bad, you just need some strength bonus to knock the guy over.