Q.WHAT RIVERS TO FISH IN THUMB AREA . A. Don't do a lot of fishing around the Caseville area much anymore. Back when I did the Pinebog and Pigeon was good for bass in the spring and summer. Body baits, spinners and spinner baits worked best. Water is to low now though for the last few years. I also did some casting with cleos and raw spawn under a bobber in the harbor and around the docks at Port Austin this time of (Fall) year for King Salmon. Wish I could be of more help, but the rivers I fish now are the Saginaw and Tittabawassee out of my jet boat. All that is done with lead head jigs and minnows.