I have one of those gun rests made by Hunter Specialties that fits on your knee and cradles the forearm of your shotgun. I can keep the gun butt against my shoulder and run any kind of call I want with both hands. The biggest issue I have with them is scattering the pot & striker if I need to jump up to go stand on a turkey's neck. I lost a good striker that way, but it's a small price to pay to be able to keep the gun up and your hands free.
Luck Counts, good or bad