Knew you'd see the light sometime!
run your goose dekes - ducks will readily work to them.
But it's always better to run some duck decoys to sit 'em right where you want to.
On a budget? using water keel dekes as suggested is cetainly one way to go. Personally, I'm not that fond of it just because we're usually in knocked down corn fields around here and the visibility can be quite poor.
Outlaw or real geese skinnies work nice in this situation and the best thing is that unlike typical goose rigs, if you're running anything more than a couple of dozen duck dekes ... it's just overkill (but you can never have enough goose decoys!)
I run duck skinnies some time, but my favorite low water , wet/dry field duck decoy is the carrylite duck shell. pretty hard to find nowadays, but I think discount decoys (do a internet search - I think this is it) still carries them. probably $70/dozen, you can pack two dozen into a std size backpack (I know this!) for humping deep into a field and they have two stakes to make them extra long if necessary.
If you're thinking what to use out west in nodak or provincial pea or wheat fields, you just don't use the stakes (this is where water keels would work well too). this is also one reason why I like them a little better than skinnies; very versatile and if the grounds hard or even frozen - doesn't matter. anyone that's tried to get a plastic outlaw stake into frozen or rock hard soil knows what I"m talking about!
G&H has shell ducks as well. just more expensive.