Sharps,
Actually I did fish the Grays starting upstream from Alpine Junction about 5 miles. Low water made for pocket fishing conditions with teeny beadheads. Tons of smaller cutts with a few in the 14-16" range. The next day I waded the Salt River just South of Alpine and did REAL well. Cutts in the 16" consistently mostly on Adams parachutes till I ran out of those ( bank hooking) and then ANYTHING small did the trick. You're right, there ain't nobody there in late Sept early Oct. A great place to be at a great time.

Mark