The only way braid works around rocks is if you use a sufficiently long section of heavy mono on top of the braided line. When you use braid in conjunction with a long heavy mono leader you get the benefits of both worlds while eliminating the weaknesses in a sense.
The braided line provides you the advantage of fishing heavy current with minimal line drag, high breaking strength to fight trophies, the ability to use compact reels and still maintain an excellent line capacity, and superb casting distance.
My standard flathead set-ups use a 20ft 80lb mono leader on top of a 50lb Sufix 832 mainline. I have had my 80lb mono cut on the rocks before while fighting some truly big hogs. I do not want people thinking 80lb mono is overkill. These flatheads are big and they are powerful, when they get themselves into the heavy current below a dam they take you where they want; straight into the rocks.