I understand- we have some similar areas in MI- Todd Farm in Allegan area, and Shiawassi near Saginaw. The only way I have found to get shooting, assuming you get a early blind area draw in the morning lottery- is on real nasty weather days, when the geese are pushed by strong winds, snow, overcast weather-making days- Almost all pass shooting then- 3" 12 magnum or 10 gauges work best, and seldom do you seem to get birds working your decoys as you would like. I seldom try to call, other hunters in nearby blinds can blow their lungs out, I'm just hoping for a single to drift my way--
