4th, I have two IR lights attached to the back of shop. Each light has 96 led's. These lights can be purchased that are 12vdc, which would be needed if electric power isn't available. The ones I purchased are 110vac since I have electrical power in the shop. They come on at dark and go off at daylight. If I was operating them off a battery I would purchase one of those remotes that would turn them on only when needed to shoot.
They light up my bait site quite nicely and are mounted about 12 feet up on the back of the shop just under the roof overhang. I'd say they are about 35 yds from the bait pile. Bait pile is 95 yds from my house. I'm sitting in the middle of several hundred acres of field but the closest woods is over 200 yds. away with most at closer to 800 to 1,000 yds. Coyotes are much bolder during the night time and will come very close to human dwellings while they hunt.
The IR lights on the shop allow me to shoot over the bait pile without additional IR lighting on the rifle if the animal stays within the bait pile area. That allows me to not get the whiteout associated with rifle mounted IR lights. I do have a Sniper Hawg LR66 with IR module and variable power rheostat mounted on the rifle so that I can shoot if the animal moves out of the lighted zone from the building mounted lights. The whiteout doesn't work well when recording and can also hamper seeing what happens to the animal at the shot.
Now for calling, I use a rifle mounted T-20 IR light with 3 power levels and it works quite well. I can Id animals out to 300 pretty easily. But, I don't try to record when calling as there are just too things happening and here in the east we don't get that many chances where one responds to the call, so I try to focus on getting the kill.
The shop mounted IR lights look like these in the link.
http://www.ebay.com/itm/AC-60-Degree-96-...r-CCTV-Camera-/
If you have further questions feel free to ask. If I can't answer them somebody here probably can.