I been there and quote, done that..
Really Clint the only thing that helps besides wool fingerless, which I think are the best, chemical hand warmers in easy access pockets, Ya just gotta move alot to keep circulation and blood flowing... Run on dat... lol
Standing on spot you will get cold, at least I do.. Heck unless you crank the buddy heater in the shanty, which will be happening sat :), in the woods of course..
Cast awhile walk down stream as far as you wish to fish then work your way back up..
Good luck