honestly.....the options are very limited the first few weeks of the season for snows...scout your field well and then scout the birds and if they are not coming close to your field, I wouldnt bother with it...
If field 19 is the field I am thinking of, it is in the Stanwood area and has some sloughs bordering it that hold a fair amount of ducks, so you may want to just think ducks insted of snows..