I can't tell you how many times I used to go there. I used to live in Lancaster and spent 3-4 nights and weekends there when single. But life has gotten in the way here since getting married and moving back home to Gettysburg. My best friend lives 5 min away and I've spent a LOT of time there. Shad, stripers, perch...I've caught thousands there. Shad should be there now too, and are great fun on light tackle. It used to be nothing to catch a 100 in few hours, sometimes 2 at a time.
For the stripers, just anchor up behind a rock and catch some perch. They'll be in there out of the current. Keep them alive in a bucket or cooler. After you catch a few, switch to a heavier rod with about a 2/0 circle hook, maybe a 1/4" split shot if the current is fast 18" up the line and hook the perch thru the lips. Gently lob the perch out above rocks and let it swing down behind into the eddies...and HOLD ON. Let the fish have it a minute so you don't rip it out and then just reel when you feel the weight of the fish. Also works the same with eels. We usually drift while working the perch/eels behind rocks.
If the water isn't moving (not letting out at dam) throw poppers early morning and late evening.