I know quite a few people in my circle of dog friends who are also wary of dog parks. I certainly don't take my new foster dogs to a dog park as I don't know my foster very well and how he/she might react in different situations and I don't yet have the obedience control I feel is necessary for that environment.
I found an interesting article you may like to read regarding dog parks:
and while there check out lots of other dog training/management articles
Enjoy the challenge!
One of our new boys looking for a new wonderful home - 10 yr old Calvin