I’m here right now fishing the Madison river.. the Yellowstone was off a little this year and the galliitan has been to hot. October’s is getting pretty late but you should have no problem finding a good guide, Ide check out beartooth fly shop and guide service I haven’t used guides but they have hands down the best shop I’ve seen in this area. If you just want to do some diy wade fishing send me some pms and I’ll tell ya where Ide go to.