I was up on the Dutton on the 10th, 11th, & 12th with my son who drew an Archery permit. He's still up there trying to find something to poke an arrow into. We started out on the rumor of a big bull on the southeast end of the unit (Flake Mountain). Friday night on the 10th, just before dark a small herd of 20 with two bulls moved through the area. The biggest we guessed at 340-350, and the smaller bull was a five point. They never made a peep, and they were gone the next morning when we tried to re-find them. Something was moving them out. No bugling and no other fresh sign anywhere. We never saw anyone that looked like they were members of the infamous posse, and we only saw a few other hunters/scouters. My son is now trying up high with everyone else. He says he has seen a few more bulls, but nothing to shoot yet. He's only passed one oppertunity at a smallish 6 point at 60 yards. Tomorrow is his last day, so I hope he runs into something.
Good Luck, I hope the late rut this year works out for you on the Muzzle Loader hunt (mine too).