Most ducks will land in mallards, and a vast majority of what you see in ohio is mallards, and handful of Woodies, black ducks and then various whatevers, I got my first redhead this year. Prior to that my kills have been about 90% mallards, so I just use mallard decoys.
I've been looking into the motorized decoys reading reviews and reviews an watching youtubes on them. I think I need atleast one of those, probably two. But they will be for next year. I'll buy them sometime this spring/summer. It's too much to pull a string or two, blow a call and grab a gun all at the same time.
If you see the ammo in my avatar on sale anywhere, please let me know, thanks.