We are aerifying small areas on greens and collars this morning.
The depth of the aerifier is set to a very shallow 1/4"
We are going shallow because we are seeding these areas to promote some regrowth. The seed is mixed with sand, brushed then watered in.
As I marked the areas to be done this morning I observed that the location of the majority of these areas are located where there is morning shade and/or have high compaction from foot traffic going on/off the greens in the same area.