For a few bucks a couple of photograph type coyote targets can be setup in the type of cover you would be hunting in, morning or evening. See which sight setup gives you the best shot placement. With just a bead in low light I see shooters drop the butt of the shotgun, lift their head trying to see the coyote. This leads to shot patterns over the top of the coyote. Follow up shots will be faster with only a bead, whether they are accurate is something else. It is also possible the shot pattern, doesn't impact "on the bead" and an adjustable sight will be needed. I have a Leupold ultimate slam scope, it has worked perfectly for several years on my Savage 220.