I've tried both a Red dot and various scopes on an SKS. I didn't like them and took them off. My eyes are not great anymore but I can still shoot better without them. I found them to be more of a contraption and in the way. The red dot was kind of ok, but when you put a rifle away for a few months the battery was dead, so what use is it when you need it and it doesn't work. THe Red dot didn't last very long in cold weather either, nor is it any more accurate at a distance. One of the problems with cheap Dot type optics is that you have a 6 moa dot on a target that is 100 yards away. I have better Dot optics, but it makes really poor sense to install a $600 Dot onto a $200 rifle. Another problem with Dots, is when you are doing some late night shooting with low light conditions, the intensity of the dot blinds you from seeing a low light target such as a coyote.
I played. I had fun, but I can shoot an SKS better without it.