I'm not familiar with the Seneca River, but if you ever want to fish the lower Genny let me know for some details. Lots of cats, and a great place to take a young person for lots of action. We usually use cut fish for bait..... lakers, salmon scraps, etc....... and hang chunks hooked through the skin under a slip float. A surprising number of cats in the Genny are not bottom oriented but are up off bottom and are structure/current oriented. Seneca River cats probably aren't much different.