2026 Fall Mack Days   Lake Trout Fishing Event/Contest on Flathead Lake—for your address please use your mailing address. Questions contact Joe Santos at 406-274-0613 AIS boat inspections are required of any boat coming into the area out of the boundary of the Flathead Basin or any boat that has been taken out of the … Continue reading Event Entry 2026 Fall–please use your mailing address 9/10/2026-11/8/2026