Something big.

[wakina]

It could have been a large carp, catfish, sheepshead, musky or even a sturgeon.

I have people laugh at me for over kill on my perch outfits but for the very reason that you encountered I use this to fish for perch. I spool my reels with 30# Braid left over from filling my trolling reels. It is like 8# mono in diameter and I set my drag like it is 8# mono. My reel is a size 1000 Cabela's Pro Guide Spinning Reel mounted on a Falcon BuCoo ultra light spinning rod. It make for an awesome perch combo and if something breaks in the system it is usually the snelled hook. I hate to have to retie my terminal tackle during a hot bite so changing just the hook is a better deal and much quicker.

[imrsmk]

I also use left over braid from my trolling rods for my perch setup. I really like the sensitivity it gives, but have to be careful setting the hook.