Welcome Mtneerguy, I have caught quite a few carp on the fly at Stockton over the years. The only way I do this is "sight fishing" to fish that are "muddling" in the shallows. I use a fly like a Clouser minnow or crawfish type fly with weight that will sink fast and usually has bright enough color that I can see it on the bottom. I lead fish and drop the fly in front of them and wait. When the fish gets close enough to the fly I give it a little twitch. If he's interested, he will inhale it, or he may bolt. Carp are skittish and tough to fool and a real challenge. Fly fishing for carp is the closest thing to going after bonefish and redfish on the Florida flats. Ideally, I like low lake level in the backs of coves and a low wind day.
As for Bass, I fish larger streamers for the most part and a little wind is beneficial even though it can make casting a challenge at times. Bass in Stockton will attack a fly, particularly in the Spring when they are concentrated in shallow water. You can catch quality fish too. My favorite 2 streamers are the old standard Lefty's Deceaver in white, and a shad colored Puglisi style streamer.