Re: Upper/Middle Delaware River Walleye
Never fished the Delaware, but maybe try some bigger minnows like wild caught creek chubs or shiners. If none of those are available, the bigger store shiners would be a better choice than the fatheads; although fatheads tipped on gulp or twisters work fine once you've located fish. The big chubs are just a much better search option, plus if you have someone new to walleyes with you it will prolong the hold time significantly until they get used to the strikes.
Deep water is definitely worth looking for, but this time of year the fish are on the move or at their spawning locations. I'd suggest finding fishable areas in or near creek mouths. Fish will often hold on the current seam or in the current outside of an eddy, so make sure you fish more than the slower inner eddy stuff near the shore. At night the bite will often move shallower and in towards shore.
There is always a season!