Many of the beautiful wildflowers come out at the same time of many of our mayflies. We now have some of our heaviest hatches because the March Browns join the Eperous pleuralis and Blue Quills. Frequently if I watch a pool closely, I can see the trout taking all three of these, especially the spinners at dusk. Since the Mr. Rapidan Parachute size 14 matches both the Eperous pleuralis and the March Browns I simply put this on and stick with it. The one exception would be on a real cold day when the Blue Quills have trouble flying off the stream and the trout lock in on these duns--then I use a Blue Quill Dry size 16.
All of the Shenandoah National Park and George Washington National Forest native brook trout streams are in excellent shape. For more information on the Shenandoah National Park streams, see my book Trout Fishing in the Shenandoah National Park.