For about two years now I have been doing battle with my local coyote population. Recently with the advent of 6pm sunsets I find myself needing light to aquire targets effectively. Using regular or LED lights spook the wiley animals, so are a no go. I have been told that coyotes can't see red light. Red covers are available for various spotlights and flashlights. I was wondering if anyone has had success with these covers or if I need to purchase an expensive varmint light rig? Also what calls do you have the most success with? Thanks