"Only downside is the cost of setting up a good digital SLR and all the extras in the woods."
This is (very) private property and I'm responsible for security here. After fourteen years, I (like to) believe my reputation is pretty well established.
The real concern is rain.
It took me long enough to save-up the money for that stuff. Being a person of rather humble financial means, I don't even
want the added expense of replacement. I've had a few close calls, but... knock on wood... so far so good. (I did have to dew-proof everything, though)