I prefer a course set to trick shooters, angles, elevated, downhill mixed in. Set the longer target 1st to challenge and don't have two shots in a lane exactly in the same direction unless ones tight to the ground and the other much higher. Don't use whole yards especially with the mini kills 23.5yrds is a nice one to test you :-).
Variety is the key I hate courses where everything is the same.
Steyr LG110 FT, Sightron SIIISS 10-50x60 LRIRMH