Go with whatever shooting position you feel most comfortable with Bellycrawler, just remember a light supportive hold will work best with a springer, don't try to rest it or lock it in a vice like grip.
Out of curiousity I shot it yesterday just resting on my open hand to see what would happen.
I've now found something else not to repeat.
Rabbit Stew, no artificial additives except lead.
IF THE MUD REACHES YOUR KNEES GET OUT OF THE FIELD QUICK. WANTED. UNF MOD.