I've never decoyed that early in the season, but I have decoyed in the past. It's fun for sure. Tons of fun to watch a deer get bamboozled over a piece of plastic. 
Actually, now that I think of it, I have decoyed during the rut. I set the decoy in a hay field, and dumped some Tinks on a handkerchief, then pinned that to the butt end of the decoy. I had a small buck circle that thing for over an hour, and one doe who was literally frothing at the mouth when she got down wind of the Tinks, it was weird.
Buck decoying is fun too. Fun to watch a buck get all bristled up.
Only thing I don't like about decoying is the hassle of dragging it in and out, and the fact that it tends to make the deer real spooky/jumpy.
Don't cry because it's over, smile because you were there.
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