Just a couple of pointers that I have learned.
Set the camera up where the sun won't shine directly in it, Face it north so it puts the sun behind you for most of the day and on the side of you in the mornings and evenings, the glare can be pretty bad with the sun.
I set them up to take two photos on every triggered shot. And I have it reset every minute so if an elk is drinking for 5 minutes I will get ten photos.
Always use the best resolution, With a 2 Gig card and a 5 megapixel camera you can get about 2500 photos. Ive found that on my best setups I will get 2500 photos in about three weeks.
Always have fresh batteries, even if you are at 65 to 70 percent battery life still left, replace them with new ones. Why it works better, I don't know but it does.
Remove and weeds and brush that may blow in the wind in front of your camera because they will trigger you camera and you will get alot of wind photos.
Screw them into the trees with wood screws to keep them secure from when a bear or elk try to mess with them. That seems to help the camera survive when the critters get curious.
I like infared over flash, I think they give you just a little better photos at night.
Just some food for thought