I have a few thoughts in this. First, I think you're more likely to get drag on multi bh nymph rigs, as opposed to a rig that runs shot between two flies, because if they land in different current they pull against each other.
Second, although I've had very good days using bh on BS, its been when there's less light (overcast/dusk). With non-bh nymphs, I'm more consistent. I recall when I used to wear a watch while fishing, and sometimes glare from the face would spook fish.
Third, Tony makes a good point about bh nymphs sinking straight down. While I like that I get to bottom quickly on deeper faster freestone streams, BS is shallow in most areas. The current speed at the bottom isn't that much slower than at the top, therefore you may be dragging. I am think this is why the Letort is so tricky. I'd venture to guess that the cress at various heights in the water column create layers of differing current speed.
Fourth, its BS and sees a ton of pressure. I don't know how many times I pull up only to see someone wading right through the middle of the stream. I've never had to venture a foot or so off the bank.
Now, the reason I still have bh nymphs in my box- strike detection.
Tony, can you pm me your upcoming classes?
