This one is easy. Happened a couple of months ago.
Was fishing with my stepfather, a buddy, and we were in the Kissimmee River. Had thrown t rig magnum worms and swim jigs most of the day, big fat zero. Meanwhile, stepdad was on fish #5, my buddy caught his first ever bass, and I was having a big fat zero day.
We were fishing near one of the locks, and I decide to go with a watermelon bladed jig with a super salt fluke.
Can see plenty of fish feeding.
Was using my 8.3 Shimano SLX XT with my 6'6" BPS Tourney Rod. After about five minutes, and just as about I was going to curse under my breath, something struck my lure and it felt like lightning shooting down my rod. Instantly, I snapped up, set the hook, and immediately knew it was something on the large side. I could feel the struggle in my wrists. A moment later, it broke the surface, and it looked to be about a 10-15lb catfish. When it went back in the water, I felt it struggling hard.
...and thats the moment the reel came off the rod.
"Oh $&@!", I exclaimed, and then the line went slack. Fish off. My buddy groaned. My stepfather, as usual, was noncommittal. Got to keep my reel and lure, though the fluke trailer was gone.
Now, even if I could do it over and lock down that reel like a vise, I'd still fail because a random tsunami would capsize the three of us in the water just as I was getting the fish in the boat.