Yes, number two on my list of best places for trout fishing is also in Montana. Would you expect anything less? Montana is Big Sky country, after all. Missoula is typically though of as a laid-back college town with a fishing addiction.
The bouldery Blackfoot and Bitteroot empty into the Clark Fork, which in turn has 300 miles of fishable water. I first discovered this waterway while following the Lewis and Clark trail on a summer vacation. I vowed to go back and fish there and the Missouri, that is also full of rainbow and brown trout. Neither location disappointed me, my boat and its 2 cycle oil.