When I set up, tree stand or ground blind, I make a mental dope card. I range a couple tree's, rocks, etc on the expected trails. Give me an idea of what range I need in that instance I don't have time to make all the proper adjustments. I also shoot my bow a lot. I practice at 40 yards with my pin set for 25, as an example. This way I know my drop.
In your situation, how fast is your bow set up? As long as you aren't shooting some monster arrow at super slow speeds, you can probably set your pin at 25-30 yards and be covered for most practical ranges to make an ethical kill.
This is one of the other reasons I use a hand held release. Clip it to the d loop and you are set. See deer coming in, make a quick range on his estimated path, turn dial and shoot when appropriate.
If you are making that long shot. What if it's 55 yards and you have a 50 and 60 pin? Will you hold high, or low depending on the pin you use? At that range, there is a good chance you would have enough time to range and adjust a single pin to the exact yardage you need.
As you can tell, I am a big advocate for single pins, but they are not for everyone, or the best for ever situation. For the style I hunt, they give me the least amount of error. I missed a nice buck a few years back using a 5 pin sight. Buck was at 30 yards, and in the excitement I used the 20 yard pin and shot low. With the single pin, I feel like it forces me to really slow the situation down when hunting, focus on what I'm doing and make a better shot with the proper yardage. My longest kill with a single pin is 43 yards and it happened quick. so I do think you would surprise yourself in how quick the adjustments can be made. But again, it may not be the best site for your style of hunting.
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