I don't think you need one. But I don't have a clue how your bow shoots either. What's the difference in point of impact using the 2 pins at 10 yards? This will tell you what to do at shots under 20 if you don't have a 10 pin.
I'm set at 25,35,45. I couldn't do that with my older bow. I only hunt as well.

"Hunt smart, know your target and beyond"