Why fly fishing nymphs?
Nymphs make up the main diet of trout and other fresh water fish. For most of their immature stage these nymphs live under rocks and stones on the river bottom. You need to get your nymph down to the riverbed where the fish are feeding. I’ve found the best way to do this is by casting a deep sinking nymph upstream at about a 45-degree angle then stripping the line with my hand as it travels back towards me. I make sure that the fly is drag-free. If I need to mend the line I do so upstream. Never mend your line downstream, you will actually create drag, which is just what you are trying to avoid. The take can be very subtle so if you are having trouble detecting it, try using a strike indicator. This is a fine time to use a dry fly as the strike indicator. With practice you will begin to feel what is happening under the water and no longer need the indicator. Some nymphs are weighted in the tying process, if yours is not you can add a small split shot about a foot above the nymph if you