Anyone hear of using a flash coat on top of the shot gunite? I have seen this done to stabilize the dirt before laying rebar and shooting the shell, but a vendor told me they shoot the shell, then right after it is shot and formed, go over it again with another 1-2" of gunite. Why would they just not shoot it all at once? And won't this cause adhesion issues between the partially dried gunite and the next layer? Any purpose for doing it this way?