My introduction to fly fishing was first with nymphing and for a couple of years I did nothing but. Even though I now love dry, the majority of my fish are still caught while nymphing. I've played with indicator free but felt I missed too many stricks. However, I do know a couple of good fisherman that it seems to work for.
A couple of suggestions for your consideration:
- If you want to nymph the banks during a float, forget the standard indicator and use a hopper or other terestial as your indicator (e.g. hopper-dropper) Can by highly productive even if it isn't hopper season.
- Focus on getting your weight right. Make sure you are on the bottom without dredging it.
- I like putting my bottom nymph close to your weights ( 4 inches). Others may suggest a much longer section such as 12 - 16 inches, but I just don't believe it's an effecive way to put you on the bottom.
- Pay attention to line control.
- Strike at everything that so much as twitches.
- Your leader length should be ~ twice the depth you are fishing.
- Use two flies. This suggestion may get a few negative comments thrown at me, however it's effective...
Good luck.