You are actually not far off. I used to really be into big Lakers in mountain reservoirs. 20, 30, 40+ pounds. in open water or through the ice. My personal biggest was around 35 lbs. Don't know officially because I couldn't get it through my ice fishing hole and I had to either break it off or kill the fish. Their is nothing better than ice fishing at 10K ft elevation in a January sunshine storm. January, pure brilliant sunshine, 65 degrees, 5 feet of snow, brats on the grill, beer in hand while waiting and watching tip-ups. The best big laker lure is a 4 - 5 inch white or glow tube grub w/ 2 - 3 oz lead inside, tipped with rotten sucker meat. Drop down and hold on. Also works for big bows and pike too.