Hey Ray, Hope all is well and looking forward to seeing you on the water soon. I used to fish the Bucks county stretch of the Delaware a lot with the fly rod years ago before I got spoiled by the Susquehanna. There are lots of great bass areas for the fly and I concentrated on the New Hope to Frenchtown stretch with Byram being one of my favorite areas. I would try to be on the water in low light and usually used deer hair sliders , kind of a precursor to the Crippled Minnow. The key for me was to fish the fast pocket water- the bass there were much more likely to pounce on something quickly and didn't have time for a long eyeball at your offering... the neat part of that stretch is you never know whats gonna grab your fly- walleye, wayward stocked trout ( there even used to be a population of native browns, not sure about now) , stripers, muskies and the long-eared sunfish ( river sunnies to me

, which can put a nice bend in a five weight ! Its simple fishing and May and early June are prime time but the white fly hatch in late summer can be a blast also.
Good luck
Tom