There are also products made for scuba diving/snorkeling that are excellent in keeping the mask free of fog. They're inexpensive, maybe something like that would work. I've used the following Sea Gold Anti-Fog and it works well: http://www.scuba.com/scuba-gear-54/028053/McNett-Sea-Gold-Anti-Fog.html
The trick in using this gel is to apply a good layer, then quickly rinse with fresh water, and it leaves a crystal clear film that does not fog.
Also, in a pinch, I've been told that you can simply spit in your mask, rub it around and that will keep it from fogging. Divers swear by that, but I have not tried. Maybe spit on your cam & let us know how it works?
I will admit, I love deer plots.
I love planting... even the garden at home.
What I do not like are high cost farm implements.
I found myself in need of a cultipacker for clover and other small seed - but could not find a decent deal on a small unit.
OK, fine... I will make one!
The materials were very simple... some plastic corrugated sewer drain pipe, some metal, 2 bearings and some concrete and you are in business!
I cut the pipe, in this case, to 46" wide - as I intended to pull this one...