We used to get our wrap around moccasins from the Halfway Reserve and use moccasin rubbers over them. Take the rubbers off if I was stocking in close trying to be supper stealthy.
We would just trace our foot and send it to the lady that made them. Fit like a glove every time.
Slippery as hell if it snowed while you were sheep hunting though.
The exact same smoke tanned moose hide wrap around moccasins and rubbers they sell here.
But we payed $70 instead of over $200 Ouch!
http://www.trappersden.ca/Moccasins.htm