I have used both red dots and scopes. Except for the extra weight, I might prefer scopes to red dots. The best turkey scopes have a round reticle you can put over the turkey’s head. They are extremely fast and easy to use. My favorite, the Nikon TurkeyPro, is naturally, no longer made. Lately I have used Weaver’s 30mm Kaspa turkey scope, which has a vertical, oval reticle that fits neatly over a turkey’s head and neck. Most circle reticles are designed to cover a certain amount of the turkey at a certain range when set on a certain power, to you can use them as a ranging aid. I completely ignore that feature and just put the circle on the turkey’s head and shoot when the bird looks in range to me. Circle reticle or no, any scope of about 1.5x-2x is about perfect for turkey hunting and might be just what your aging eyes need.