The only goose I ever had was a rescue, came with some Indian Runner ducks. They'd already been trained to the coop. Last to bed at night, of course, but I just tapped my rattly stick on the ground to herd them, and repeated "Go to Bed! Go to Bed!" and in they'd go.
What I used with my Cornish X chicks (who never wanted to get their fat butts off the ground to move to the coop) was a couple of flattened cardboard boxes. I made a chute, or funnel, on either side of the ramp. Then a third flat box I held in front of me to herd them toward the ramp, shifting it right or left as needed to encourage the right direction to go.
You might try making a small pen around their coop, and get them used to getting a treat while inside the pen. Rattle a butter tub or coffee can, or call to them with a specific sound/call when it's treat time. When they're used to that, then like another suggested, tossing treats into the coop might work.