It's been a while since I hunted the Spring season, however, I can get you started.
Generally speaking, land access is not difficult in the Spring.
The geese have a set flyway but the fields they use vary depending on feed.
You'll need a big spread as they are very wary in the Spring Season.
I know the above is Goose Hunting 101 so I'll stop there. If want a DIY Hunt, call the GF&P's department to get the best guess on a time a head to SD. You can track them down, pattern the flights and most likely, gain access.