Last time I went fishing, I was using a minnow, a bobber, 12 lb. test line and no leader.. I noticed the bobber very slowly go under, and once it was all the way under, I set the hook and started to reel it back and I pulled back a hookless line. The fish cut my line so fast that I didn't even feel the weight of it. I have always thought it was a walleye, but have read that walleyes usually don't cut your line, but I don't think northerns take your bobber slow like that.. but maybe I'm wrong.
Anyone know what it might have been?