I've hunted Clinton a couple of times last year. There are loads of deer there, but at the spots I went, there were plenty of hunters too. As Hunter 59 mentioned, you do need to shoot a doe before taking a buck there.
I saw an albino doe not too far from the park office, that was pretty neat. You'll need to go to the park office to getyour site permit. Don't be afraid to ask those guys questions. They are usually very helpful.
I would definitely check it out if I were you. However, don't be one of the annoying hunters by wandering/scouting all over only an hour before dark or a halfhour after sun-up.

BTW, the lake is excellent for bowfishing for carp. [8D]
Good luck!