Basilboy, I just saw this post recently and thought of your post.
"Dog Park Etiquette: Dos and Don'ts from a Trainer"
(I'm having a weird issue where all links to that blog keep redirecting to one specific post, not the one that I intended to link, so you might have to go to the main page? Anyway, sorry for any confusion)
I personally prefer dog parks where I can keep moving, where there are lots of trails and plenty of things for my dogs to sniff and see aside from just interacting with dogs – because not every dog enjoys playing with every other dog! I feel like they learn to keep a closer eye on you (and you on them) if you're a moving target and not grounded to one spot all the time. So I don't really like small, completely fence-enclosed dog parks myself, but I do need adequate physical barriers (large bodies of water, partial fencing, etc.) combined with high visibility in order to feel secure letting my dogs off leash.
Thank you for the article, a great read for before going to the dog park. Though I think we will wait until our puppy classes are over and I'm more confident in his behavior.