I was thinking about getting their single pin sight for hunting... Anyone use that?

I use a Pro Slide and I can tell you that the pin on this sight is the brightest that I have ever seen period.

EWolf, I can't imagine there not being enough vertical adjustment for you. I'm guessing you use a very low anchor point and that is what is causing you problems. Anchor point has a lot to do with where your sight pin lines up. I shoot a very high anchor and sometimes have to set my sights at their lowest setting to get my 20 yard pin sighted in.

I'm kinda high. I shoot with my fingers bellow my chin. Perhaps they have changed the sights, but mine wouldn't even go high enough with only one screw on the vertical adjustment.