The farmer put in soy beans in the field this year and I was wondering what is the best food plot to plant next to it?

I saw a show with the Drury brothers and they said to plant oats next to soy beans. What kind is the best? Buck forage oats or something else?

BTW - I am planting 2 food plots next to the soy bean field..one about 1/4 acre and the other one about 1/8 acre. Also, I am in midwest WI if that helps at all.

Any info is appreciated!