The beauty of Infrared photography is best brought out when the sun’s infrared rays are strongest. Typically, this is midday when the sun is at its brightest. Unfortunately, if you are shooting using live view, your LED will be difficult to see due to glare.
Though I rarely recommend various products, I encourage you take a look at Hoodman HoodLoupe Optical Viewfinder for 3.2″ LCD Displays and related products. It effectively blocks out the sun’s glare and allows you to have a clear view of your subject. Hoodman also has a rubber eye loop which fits over your viewfinder if you are hand-holding your camera and don’t use your LED.
Rich Smukler specializes in Landscape and Fine-Art Photography from his studio in South Florida. His works have been featured in numerous museums, galleries and private collections internationally. You can see more of his works at http://www.richsmuklerphoto.com. (Kick back and stay awhile).