Pros:
-awesome scenery
-awesome locals (Thanks Adam, Mike...Chris, Frank, Cro, Tim, Ren)
-challenging, unique shots
-most tees are concrete hexagonal-shaped
-Highlight holes:
-hole 4: this one is tricky because according to locals, it used to be an open fairway before a storm knocked over one of the oak trees. I felt that the fallen oak tree made the hole that much more challenging and more interesting
-hole 4 (alternate): spider hole, a uniquely placed basket in the middle of a tree trunk with branches surrounding the basket. Must shoot from alternate tee pad (more or less a patch of dirt with a path going uphill)
-hole 5 (regular and alternate): from the normal tee pad a cool shot, but have the locals show you the "alternate" tee pad (which you can walk towards from the spider hole at the top of the hill of hole 4's alternate position). The alternate shot is easily one of the highlights of the entire course if not the best hole
-hole 14: another of the course's highlight holes. Shooting over the drink (or mucky muck...when I went the lake was semi dry and muddy). Also a kind of downhill "top of the world" type of throw, but you can also throw a big hyzer or anhyzer. I was surprised that some locals elect not to throw this hole. If you come here don't pansy out, you have to throw this hole in the name of Oak Grove.
-hole 17: This one has a double mando between two trees, with a third tree in between the two mando trees...a tricky, yet entertaining shot with a beautiful tree and rock lined fairway.
Cons:
-lack of signage (no map, no reliable tee numbers, and lots of times no basket numbers either), a really really huge con
-difficult to navigate, especially without a map
-a couple tees were uneven cruddy rubber mats
Other Thoughts:
It felt like I was experiencing a piece of history being able to play this course (1st permanent DG course ever in the world!). Super friendly locals was another great thing about Oak Grove. I felt that this place was a great mix of both distance and technical shots, but moreso technical shots. It helps to have both a forehand and backhand here. Must be able to throw straight shots to hit narrow gaps with low lying canopies and the ability to throw downhill on both holes 5 and 14. Midrange is very important here because many times you will hit a tree and need a good upshot. I never felt that a roller was necessary here, but that's not to say it couldn't be useful.
If this place had signs on each hole and better navigation, I'd give this place 3.75 or even a 4. But it gets 3.5 for the navigation issues and lack of hole information. Because the current course is not the original course, the numbers on the teepads do NOT correlate to which hole you are on necessarily, so keep that in mind. Baskets are old, some are missing the inner chains, but they do the job. Baskets sometimes are lacking hole numbers too. A quick fix would be to stencil the hole numbers on both teepads and baskets. Even some of the locals I played with had trouble keeping track of which hole we were on.
Overall a great course to play on, I'm glad that I completed the pilgrimage to the holy land of disc golf and if I'm ever in the area again I would not hesitate to play this course. Thanks again to the friendly locals who made this experience much more enjoyable!