*sigh*
I'd suggest listening to Dave, El Tejon, and others that have and continue to train folks.
One cannot buy skill and targets
One cannot "get" skill and targets off the TV, Movies, Internet, or reading a book.
One must Safely learn correct basic fundamentals with a gun that fits them for task intended. THEN learn the correct basic fundamentals of any new concepts and skills. Trained Instructors are such trained instructors for a reason.
Before I was "instructed" on using a shotgun "one handed" or "disabled"...My Mentor had me run the gun as I normally would slathered in cooking oil. I had already been "exposed" to mud, blood,(yep he used real blood from a deer) snow, ice, water...
Use any and all available assistance you can use. I have used my thigh, lower leg, side of door facing, the deck, under the arm, my shoes, in working with a partner ( also "hit") we took turns shucking for each and the other shooting. We used the others body to represent one of us dead and using each other for cover and racking.
Many folks are appalled at this, many at the very idea a shotgun would be abused like this. It is a tool, tools are taken care of - does not mean they do not get a few nicks and bruises along the way...or broken in learning and training.
Safe queens with too many gadgets that one is not trained in using - are worthless except for Keyboard Posturing.
Give me the lady/ gent with the bone stock pump/ semi/ double bbl/ hell even a single shot- with "character" and wear marks to watch my six.
Slather your gun with oil and run it. Spill soda or something sticky all over it and run it.
One favorite thing my mentors did was to tie a tether to me and yank and jerk while I tried to do various drills...
Yeah you can shuck and shoot a pump from prone being "dragged" back and to the side...ain't easy...doable.