best site I ever had was a single crosshair like Dry Ridge is talking about. Except mine was fixed. I shot light light arrows at targets and used one pin from 10-30yds. It was a THINK crosshair that I mounted on an old cobra, metal pinsite plate. Hate to think of the arrows I ruined with that site before I realized it wasnt cheap or cool to do so anymore. I kow shoot a trophy ridge verticle pin. I like it so so but wished the dots were thinner.
I used to have a Keller....killed deer and a couple squirrels before I decided I didnt like the noise, or the fact that the Pope and Young deer that Ill probably never get with a bow woudlnt qualify with lights on my site.