I will beswitching to a 1 pin set-up this year for hunting. After many months of researching the best 1 pin sights . I ordered the HHa 5519XL Ultra.
It has the dial, rheostat, and 2in housing, and .019 pin.
I seen several guys comment on how youmove the dial or slider at the moment of truth. You really shouldnt have to unless the deer is way out there. If you set your single pin for 25 yards, with the speed of todays bows you will effective from 0 to 32 yards or so with 1 pin. In 20 years of bowhuntingtimber in theMidwestI have never shot awhitetail beyond 32 yards.
That is just my experience, and it certainly doesnt apply to hunting out west where the shots can be much longer.

If you are shooting at animals beyond that 32 yards or so,hopefully they are calm and not moving which will allow you timeto adjust. If they aren't it is probably a shot that you should not be taking anyway.