hey rodrunner I was on the walleyes forever website for Montana looking at Fort Peck Res. and it showed Decker at 2 degrees. That should start The Toungue River resivoir to cap.I have never ice fished taht but have fished it a lot from a boat in the spring on the way back from Fort Peck. I know they have problems with gas pockets on it. I may try that this year,do you have any input on the action for hard water there ?