RE: 20MPH winds
On really windy days, I've found using terrain/habitat to my advantage works really well. I find areas that are naturally sheltered from the wind, either a huge thicket,a deep ravine, the opposite slope... and i hunt there. I've had decent sucess with that tactic.
Just think, "where would I go to seek shelter from the wind" then think, "is there food near or in there?"
One of my key spots has a huge pine woods w/ thick mountain laurel under them, I sneak in there on windy days...