Let us know what you find out if you research further. I was going to go to the Winds in 09, and would love to fish. But $100 is too much! Especially given the location I went to in the High Sierra's last month.
Having fished several times in Montana "hot spots", I would say that while most of the Sierra's trout are not nearly as large, they can be just as fun to catch...and knowing that the blood lines on some trout in that region are very pure. You just have to be willing to walk a little farther.
Either way, the Winds seems like a great place to hike. Enjoy!