Do I need to put flags in my yard for SkyShepherd training?

Why don’t you use visual ground flags for boundary training?

SkyShepherd uses feedback cues associated with layered guidance zones. The guidance zones compose the boundary in which your dog is contained. This method is very effective and doesn’t require the use of flags. The benefit of this is that you can take it with you when you're away from home. If you create a boundary somewhere else, your dog will be familiar with the guidance feedback. You’ll be able to quickly train your dog on new boundaries without having to stake out flags.