I was trolling on the s/w side of Bouy 113 on Oneida late one morning a couple-3 years ago, and watch 2 fellows having a mighty tough time with what they had hooked.
I thought it was a big cat, as there is plenty of those, there, but as I was captured by their struggle, I picked my lines, and threw it in neutral to watch.
They boated one at what I beleive was at least 5 ft long.
Quick pictures and back in the water it went.
Heard that a 6'er was caught waaaay up in Fish Creek last year around the time of the Walleye opener.