with practise i recon alot of people could. I can fire jsut as fast holding the marker with one hand aslong as its against my shoulder tight. But because u only got one hand on the maker the paint goes everywhere.
Ive normally got my head chewing grass in the snake tho.
Just tried it in the back garden. And can keep up to bout 10-13bps while keeping the tank tight on my shoulder and kinda propping my thumb knuckle under the snatch grip. Hate to see my try it in a game situation though
more efficient just to drop marker and reload without looking. keep looking at your target and if he moves you can still raise your gun and shoot, even you lose half a pot of paint you will still have more paint in your gun than you had before.