DancesWF, you and your Dad have probably as much reason as anyone to be unhappy w/ the Skok, and after some of the other stories I've heard, your wariness is probably justified.
The Skok tribal people I've spoken with dont think theres a problem on the river. Could be they dont know about what's going on. And if it gets too confrontational, I believe they can close access to any land that is tribally held. If I understand the boundary, thats above the bridge.
Maybe the answer is to let them decimate the river. Sad option, but they dont seem to manage it very well.
Saw something interesting yesterday on the canal. A tribal was on the canal with his net. A power boat went by with about 150 yards or more clear. He slowed down enough to push a big wake, and kept motoring. After the ride he got, that tribal may think a second time about where he sets his nets. Moral of the story: There may be more than one way to skin a cat....