I hunt and practice with heavy hunting arrows that result in a fair amount of arc at moderate distances. The majority of my shooting involves shooting small and big game hunting heads. This forces me to shoot one arrow at a time. I do beleive that mixing up the distances by shooting at random yardage distributed across a normal hunting range as well as pushing beyond max distances is beneficial. I find it good for developing and maintaining motor memory skill sets needed to judge distance and accurately shoot at unknown varied distances afield. This is assuming you have form down and are capable of shooting well over the same range of distances.
I break it down into a structured practice where I'm shooting on 3D targets at known distances where I'll shoot from around 10 yards out to about 40yards by mixing it up such as one shot each at 35, 10, 30, 20, 15, 25, 40, 13, 33, 23, 38, 18, 28. I may shoot one such mixed round robin for each of my hunting/shooting positions. I then like to build on this structured practice with informal stump shooting at random unknown distances. I'll also include some movers and aerials to keep things fresh.
Such practice and lots of small game hunting helps me out a bunch so that I give little thought to yardage other than is it close enough.
later,
Daddy Bear