Can we ask where you were? That's an awefully big kitty. I bet it made your 20# outfit feel a tad light, but fun!
I've had more than a few of those right-at-the-shoreline bites. I've only landed 1 of them and I saw it trailing the lure 3' before it hit as it or it's moonshadow passed over a lighter patch. When it hit, I set and it jumped landing in a hole between 3 boulders. It couldn't really fight in the smaller than a bathtub area of water, but it still gave a good acount of itself for an 8#er. I was 1/2 drenched before it jumped back out of the hole, and it still fought a little on the outside.
Tight lines,
Wade