Fulling Mill Bill Becks Krystal Flash Nymph

No weight at all

No bead and no wire, which makes this the one for water where any weight at all is too much. An unweighted nymph drifts at the speed of the current rather than cutting down through it, so it fishes properly in skinny shallow water and over weed where a beaded fly would be on the bottom and snagged. Pheasant-tail profile with a little krystal flash for interest. Also the obvious dropper above something heavy.