I think it has a bit to do with your deer, height varies across our State, best observed through observation (eyeballs or cams). My deer eat it up at 30" ~ 32" with little spilled on the ground. Higher, only the largest deer get too it, and the spill rate is high from the other deer trying.
Don't cut your deer short (or would it be high?) by placing it to avoid coons because a coon doesn't care how high it is. You need to get proactive against these critters as protein feed is a huge expense. I trap, which has been effective, but the workload is high. You need to keep extending beyond the feeders. Heck, I'm trapping them in riparian areas 300-yards from the feeders and where these areas cross my fencelines to stem migration. This has worked very well, I've eliminated them, but I've got to keep after it.
I have just gone to the Coonhoods
; I think that is the ticket if your time does not allow trapping.
Two years ago now, I looked at the cost of raccoons sticking to my feeder. I had two feeders with identical coon activity, used video instead of pictures over three months after I made and maintained one feeder coon free through trapping. Both feeders had like deer activity, so I felt that consumption was a constant. What I figured out was that each coon at a feeder is going to cost you a pound of protein a night. They put a lot of feed on the ground, much more than they will eat.