If you arn't loosing nymphs on the bottom you arn't fishing deep enough. Set your strike indicator to a little over twice the water depth. Fish a # 14 beadhead heavily weighted nymph with a #18 non weighted nymph tied 6 x to the bigger nymphs hook bend. Timing the hookset takes practice. If you are using a med action rod you really have to be attentive to little changes in your drift. Keep fishing, look around you and enjoy the beauty.