I must be doing alright for an old koot, I do some of what others say above and don't get cold, correct base layers, not too much so you don't sweat, if your feet sweat on the way in, take your boots off when you get to your stand and let the moister out for a few minutes, you can easily do this with Mickey boots ( the white ones have more insulation ) I use fleece next to the skin then smart wool or thicker fleece, then wool. For the hands I use the hand warmers with the type of mittens that you can remove the mitten part of the glove but still have the glove on, this allows me to keep the tab on and just peel back the mitten part of the glove.
Good luck !