- 2022 - FALL MACK DAYS SEPT 15- NOV 13 Flathead Lake MONTANA UP TO HD $200,000 IN CASH + PRIZES (0) $10,000 & (3) $5,000 & (5) $1000 awards plus over (9,000) $500 to $100 Tagged Lake Trout. For Rules, Prizes, Check-in Sites or to Register, go to: www.mackdays.com or call 675-2700 EXT. 7294 & PARKS WILDLIFE SANCTIONED BY SPONSORED BY OF THE FLATHEAD ENAL TRA RESERVATION A Prople of Vision Catch the $10,000 Fish! Sponsored by Bretz RV & Marine 559312 - 2022 - FALL MACK DAYS SEPT 15 NOV 13 Flathead Lake MONTANA UP TO HD $ 200,000 IN CASH + PRIZES ( 0 ) $ 10,000 & ( 3 ) $ 5,000 & ( 5 ) $ 1000 awards plus over ( 9,000 ) $ 500 to $ 100 Tagged Lake Trout . For Rules , Prizes , Check - in Sites or to Register , go to : www.mackdays.com or call 675-2700 EXT . 7294 & PARKS WILDLIFE SANCTIONED BY SPONSORED BY OF THE FLATHEAD ENAL TRA RESERVATION A Prople of Vision Catch the $ 10,000 Fish ! Sponsored by Bretz RV & Marine 559312