Okay so lots has been said about patterns, there are books, articles and the outflowings of the Technoid. I make the following observation.
Many grounds here involve 'woodland presentations' i.e. trees and bushes all over the place.
Now the killer - most of the time these 'tree shooters' break the clay. I bet you have often seen it too. Please align this with the work of Brister, Gauss and yourself. Smoke dem birdies Steve. It's all regulated by the science of Dumb Luck.