Yes, I had a coach when I was shooting at the collegiate level...( more than a few years ago now )...
and after a couple of years ( 15 yrs ago now )....when I was first shooting registered sporting clays targets...I hired a coach to work with me on and off...and he did some video taping, etc...that helped me clean up some old bad habits ( elbow positions, lifting a heel on my follow thru that was causing me not to keep my shoulders level, etc...) .....and it would have taken me a really long time, to figure that stuff out on my own....