Re: East Carson near Markleevillee
The spots that I am going to recommend are public knowledge. Other good spots, you're on your own.
If you are fishing above Hangman's Bridge, the bridge areas are best places to fish since that is where Alpine County plants fish. Other than that, find some pullouts and start walking.
As for downstream, park at Hangman's Bridge, hike downstream towards Markleeville Creek, and work your way back up.
Nymphs: 14-16 Gold Ribbed Hare's Ear, 12-16 Prince Nymph, 8 Anderson's Bird of Prey October Caddis, 18 Blue Wing Olive, 8 brown Rubberlegs Stonefly
Dries: 14-16 Elk Hair Caddis, 10 orange Stimulator, 20 olive Klinkhamer, 20 Griffith's Gnat
Streamer: 8 Woolly Bugger (choose your color), 8 tan Sculpzilla, 8 olive Barr's Slumpbuster
Miscellaneous: 12 pink San Juan Worm