It kinda depends upon amount of pressure in the area, which is the biggest factor.
Being where they want to be helps, tide, are also factors.
Truth be known, they will come to goose dekes, but it is a helluva lot more fun using brant decoys.
Why are you going to hunt them? Food source? Their food choices, due to demise of eelgrass, have made them quite challenging as table fare.
On the east coast, they have been pressured more and more, especially when other species are not available. The brant numbers are always bordering on the low side, due to breeding habitat--If the traditional area is still snow covered when they arrive, they just don't seem to bother!
Treat them with respect--They are certainly a beautiful bird, whether on the wing, or in the hand.