When i gone in PoG, 4 Steed up. I have kill them and i wait 20 min = nothing, 1 hour = nothing, 2 hours = nothing, 24 hours = nothing, 36 hours = 10-20 Steeds up.
So i think that the repop is very very long. I don't know if the 4 that i have kill is repop. I hope that can help you that don't camp