I hunted beans last year and had some success on ducks and geese but it helps if you have mojos but I don't think it's as attractive to ducks as corn is but it's still very do-able and if you have lots flying over that should help. The only problem is hiding in it with a layout blind which you usually will have to hide it in a waterway or fencerow of some sort.
###2013-2014 Waterfowl Harvest Numbers###
Green-winged teal- 4
Wood Ducks- 9