We camped at Driftstone Campground in Mt. Bethel on the PA side just south of the Gap a few weeks ago. Highly recommended. They have their own little side channel behind an island that you can tube float as much as you want all day. They also have their own boat launch.Not sure how the shore fishing is because the river was flowing chocolate milk but I'm sure you could find smalls and pans along that property.
http://www.driftstone.com