I'm using an adjustable single pin, but I know a fair amount of our team is using an adjustable 3 pin these days. Generally set at 20-30-40 and then adjust for anything beyond that. Personally I like to keep most of my shots under 30 so I leave it at about 23-24 and adjust from there.
Actually, since the HHA 3-pin became available, it's about a 50/50 split between single and multi-pin.
I switched from a 5 pin to a Trophy ridge single pin. The pins were so close together I was struggling with shots over 40 yards and the pins blur together. Your eyes change over 50. Anyway its really helped, I can easily track the arrow now and longer shots are much easier. Where I hunt shots are 10 to 35 yards. I basically set the site at 25 and adjust as needed if time allows. Good hunting! Sent from my LG-TP260 using Tapatalk