I am putting together a new coyote hunting rifle. I am planning to order a new scope from Midway. Should I also order a sunshade? If so how long should I go? The scope is a Leupold Vari-X II 4-12X40 and I will be mounting it on a RRA Predator Pursuit AR15. Most of my coyote hunting is done in the winter with snow on the ground. On sunny days there can be a lot of glare from the snow. I have never used a sunshade on my scope before, will it help or hinder things?