Callicoon is well upstream of Easton. In fact, it is well upstream of the Water Gap. The town of Hancock, NY is about 15-20 miles or so upstream of Callicoon. In other words, I fished for shad in the very top end of the river just below the confluence of the East and West Branches. A 2-hander with sinking tips would be ideal for shad in the upper Delaware, and you could fish for trout when you got tired of hooking shad without having to go elsewhere.
Yep, shad are a load of fun and not all that easy to land because of their soft mouths, which tear fairly easily.