The MSA Hopper, originated by Loren Williams, is a high floating hopper pattern - best fished in combination with a heavy nymph suspended from the hopper. A double whammy tandem.

MSA Hopper
Hook: Partridge BIN #8 (or equivalent medium wire 2XL hook)
Thread: Benecchi 12/0, black
Body hackle: Whiting saddle, dirty badger
Abdomen: Argentinean hare, dyed olive
Flash: Krystal Flash, pearl
Wing: Deer hair, dyed olive
Legs: Round rubber, black
Hackle: Whiting saddle, dirty badger
Thorax: Argentinean hare, dyed olive

Video here - please view in HD, if able:

Hans W