That's why I really prefer to use hunting club/outfitters for goose hunting around here. They do all the scouting,. It's a bit expensive, but the shooting is usually good.
I don't hunt that often, maybe will hunt several times next season with outfitters in the Eagle Lake area.
My public hunting is done in a marsh close to a HUGE roost. They get up in the morning to fly off to the fields to feed, will circle around and will decoy, but they're all gone by 9 AM usually. So, it's get up early and get set up for sunrise.
When we hunt the grain fields, heck, they don't even start coming in until well after sunrise.
They winter down here. Up where the OP is, they're just passing through. It's gonna be harder to pattern them.
200 well placed Texas rags works well for me. I've hunted over 1000 or so and if you get too many, the perimeter can be out there. Need to set up with a hole between the deeks to lure 'em to, similar to a duck set. We'll lay out prone in a white coverall if there's no cover or if a ditch or something is near the deeks where we wanna set up, we'll camo out and build a quick hide.
The public land I hunt, pretty open. White tyvek works well. They're attracted to large masses of white. The Texas Rags move around in the wind, really do a good job and much more affordable than an equal quantity of full body deeks.
The weather matters. The best days are low ceiling days where they have to come down below the cloud deck to see what's talkin' to 'em. Bluebird days can be tough. They don't like to get down below 50 yards. That's where the 10 gauge and steel Ts come in.
What once was out of range no longer is.