Nymphing
garb72,
I would imagine it took you a while to get the hang of fishing dry flies, casting, presentation, drag free drifts, accuracy, etc.
The same can be said for nymph fishing. Just give it time to get used to it. I also learned to fly fish on the dry. It wasn't until much later that I was introduced to the various styles of nymph fishing. What that did was open up huge alternative style of fly fishing that increased my chances of catching fish.
If the trout are surfacing for dries, I fish that way immediately. However, most of the time fish are feeding subsurface, either wet (I love soft hackles and woolly buggers for that) or they are feeding on nymphs (which is the vast majority of the time).
Nymph fishing in lakes is different than nymph fishing in rivers or streams. So, depending upon which waters you fish the most (lakes or moving water), try to learn the way methods that work best.
In lakes you will sometimes nymph below an indicator and the nymph may be either just off the bottom or at some level between there and just below the surface depending upon where the fish are feeding. Other times you may nymph with a sink tip line of some type and not use a strike indicator. Then there are those time you may drop a nymph 18 inches to 2 feet off a dry.
In moving water, like rivers, you will often fish in the same manner as above except you will be fishing in a very small window or area. In a lake you can keep your nymph in the water for hours if you want to. In a river you will usually keep it in for only a few seconds, unless you are in a drift boat and the rower keeps the boat going at the same speed as your indicator.
In a river, either fishing from shore or from an anchored boat or you fly is in water that is moving at a totally different speed than you are, your main goal is to keep the nymph drag free especially once the nymph gets down to the bottom. That is where your nymph has to be if you are truly nymphing. Fish feed on the bottom a lot. Your nymph has to be right on the bottom and drag free. When you make a cast upstream it takes a while for the nymph to reach the bottom, it will go drag free for a short distance if you have mended your line properly, then it will succumb to the power of the water and start to have drag and at the same time start an upswing movement. The actual distance your fly is on the bottom is at best a short 10 foot or so and mainly right in front of you. So, work your fly slowly out from you and slowly up or down the river keeping in mind the short distance you are actually covering on each cast.
You can also nymph down on the bottom without using a strike indicator but that takes a lot of learning to get that technique down pat. Then there are times when you will use a dry and a nymph as a dropper. But to me, that is not really nymphing, it is actually fishing the nymph as a emerger, a nymph coming up to the surface to hatch. That can be a very deadly way of fishing at times.
As indicated in other responses to you, it would be best to get a guide who knows nymphing and learn from him. Also, if you join a fly club, you will surely run into some good nymphers who can show you the ropes.
Larry ---sagefisher---
Organizations and clubs I belong to:
Fly Fishers International Life Member
FFI 1000 Stewards member
FFI Presidents Club
FFI Fly Tying Group Life Member
Washington State Council FFI
V.P. Membership
Alpine Fly Fishers Club
President & Newsletter Editor--The Dead Drift
North Idaho Fly Casters club