Grant is the place to go in The Loop to target larger Browns with rainbows and cutthroats too. Last summer a 20 plus pounder was caught and released on a mice tail believe it or not. The best approach for these bigger fish is trolling early and late grabbing 3-4 pounders with an occasional "toad" being hooked. Tazmanian devils, Rapalas, wedding rings, and needlefish are working. Check in at the marina for patterns,  location, and depth. Ritchie and Tom at the dock suggest taking a rental boat up deep into the Rush Creek inlet and using current to drift fish targeting the now submerged creek channel.