I've only fished for cats during daylight. The last time I fished at night was more than 50 years ago while in high school in Arcata, CA. We fished waist-deep in the surf off the beach with A-frame nets for five-inch "nightfish," which are related to candlefish, very oily and simply delicious fried on a Coleman stove behind the sand dunes (any artificial light tends to keep them from running close to shore). I had never heard of an A-frame net before, but they are very simple. You hold the apex toward your abdomen and when a wave approaches, you put the two legs -- the wide part of the net opening-- down on the sand, then lift it up when the wave passes to scoop up your catch.
Tangling with an ornery, gape-mouth monster cat in the dark does have a certain appeal. Do you fellas keep the big ones to eat? I have heard you really don't want a cat much bigger than a couple of pounds for best flavor and texture.