Man, I haven't night fished Fork in quite some time.
Always liked roadbeds crossing mainlake points on the W side. Horseshoe down to Williams. No Name and Dale. That was cover/structure fishing. Anything TX rigged (or a jig) in blk/blu/blu flk was always #1. Suggest 8" and 10" worms, big craws and 1/2 oz. jigs. Several other pond dams in that same area. You can replicate this same pattern all over the lake.
#2 Was a Joe Spaits Spinnerbait around grass. Ask Joe for "Elvis" If you're going waaay N and E where the best grass on Fork is.
Don't overlook the lighted docks, even the ones with above water street lights, and those on either side of them. Bridge aprons where creek channels swing in close, too. Swimbaits are good around the lights cuz the fish ain't lookin' down.
Best summer depth for me at night is 10ft. VERY close to deep water. I typically tie up or anchor. Spend a couple hours at each spot.