I guided one trip on the Gallatin river on the 25th of October this Fall. It was a full moon period, and the fishing was slow. Sometime's fishing can be very good on this river for big Rainbows and Browns during a full moon period.
We encountered very a very slow bite, however. We ran the whole gammet of patterns, and basically thru everything at them but the kitchen sink. We caught and released a few small Trout on some Bead Head Prince nymphs. We lost a couple of decent sized fish on dark Olive Flash-a-buggars.
Overall, it was a very slow day.
I had a trip the 26th (next day) with some very nice folks from Utah. They were a married couple who were very experience, and very well traveled.
We fished near my home on the upper Jefferson river. I decided on a float that was shorter than most, and one that I like because the river braids and lends itself to excellent wading. The runs here are very well defined, and "classic" in nature. The fishing from the boat is exceptional, as well. The fishing, although still very slow, was much better than the previous day. We used Buggars and small nymph patterns and eeked out a fairly decent day. Nothing real big, however. This was the last of my Fall 07 trips. We are currently in a cold snap, so the ice pretty much has the river freezing up. I will keep you posted as fishing opportunities present themselves.