Pros:
1. Variety. There is a pretty even balance of (RHBH) hyzer and anhyzer shots, as well as plenty of straight shots. The Front 9 is RHBH friendly and the Back 9 more LHBH friendly. While there isn't too much variety in the hole lengths (more than half are in the 220-280 range), the "airways" are varied enough to keep the round interesting, with most fairways containing several large mature trees forcing different lines. Most of the holes play through lanes in the woods, with just a few open holes. Not too much elevation, but when applicable it's used somewhat well. Hole #11 was the standalone monster on the course, a LONG straight Par 4 lined with thorns on either side reminiscent of something out at Justin Trails. Hole #4 was a fun downhill tee shot, but at only 370' this is a better opportunity to master your midrange with the elevation drop. The old trees are used well to split the fairways, but the trees alone are just a gorgeous element of this park, and I frequently found myself just staring up the gigantic trunks covered in vines.
2. Maintenance. Being in a state park, the upkeep out here is great. Fairways are clean lanes meandering through the woods. The rough isn't too bad on the Front 9, but there are numerous areas on the course where the rough just on the edge of the fairway consists of pretty untamed thorns and brambles. Several trash cans were present near some tees, but the business of this park (not necessarily the DG course) results in plenty of discarded cans and bottles strewn about.
3. Baskets. The Chainstar baskets looked pretty new, no rust, caught and sounded great. All were properly installed, no tilting or inconsistent basket heights.
4. Navigation. Head through the park entrance (after paying your fee or showing your Recreation Passport) towards the boat ramp, and there's a sign directing you to the right. A welcome kiosk greets you near the first tee, which is also where the course conveniently loops back, so you can see the baskets for #9 and #18, as well as start right away the Back 9 if you prefer. The course is pretty well set apart from all other park activities, so simply following the path is usually sufficient if you don't have a map. Directional signs are posted in the more confusing areas, and I had no problem finding my way around at the spots that initially seemed confusing thanks to these signs.
5. Tees. Concrete tees on 17 of 18 holes, and all had posts with a VERY basic tee sign (also aiding in navigation, as these posts are usually visible from the last basket). All of the concrete tees are ridiculously long, like little landing strips, and the ones on the Front are nice and grippy. There are four what I presume to be drainage holes on the tees, but they're only a few inches in diameter and flush with the tee, and didn't seem to present any type of hazard to my size 13 feet. See Cons for discussion of Back 9 tees.
6. Seclusion. Yes, this state park can be very busy (I was here on Labor Day weekend, of all times!), but disc golf isn't the main draw. There's a campground, beach, hiking trails, etc., and you'll happen across a few picnic areas and park roads while playing the course, but you're well separated from everything that it feels like you've got the place to yourself. At one point where the path to the next tee intersected a walking/biking path, there was a sign that read, "Caution: Flying Discs" warning non-discers and keeping them on the proper path (I actually give bonus points for features like this at multi-use facilities where other activities could conflict with our sport; raising awareness and promoting safety are KEY!).
Cons:
1. With the Front 9 favoring RHBH hyzers off the tee and the Back 9 trending towards a RHBH anny or RHFH, even with a good mix, it gets quickly boring to throw the same shot at basically the same length, over 200 but not quite 300. The design doesn't get too creative with the surroundings, with no risky greens like nearby drop-offs...plenty of guardian trees and lots of jail to get into out in the rough, but overall a pretty unimaginative design (probably due to state park restraints, understandably). I noticed several areas that were rather underutilized in the course design, but I also understand that the course was just recently upgraded to 18 holes, so hopefully a work in progress.
2. The Back 9 has much more treacherous rough with the aforementioned thorns, so be careful when you reach in to retrieve your disc.
3. The Back 9 tees are non-textured cement, and with the predominantly sandy soil, even in dry conditions they can be quite slick.
4. The tee signs are not very helpful. On holes with a slightly blind curve, you'll still need to scout ahead to see where you're shooting since the signs only give a distance (mostly accurate) and a "stick drawing" of the hole.
5. If you're from out of state, or are in state and opted to not buy your Recreation Passport when you renewed your plates ($10 for yearly access to the state parks...sweet deal, Michigan!), you'll end up paying to register as a park patron. The course itself wouldn't necessarily be considered "worth" paying $10-plus for, but there are other perks if you're a state resident, FYI.
6. All of the concrete tees seem unnecessarily long...with all the material used on the one set of tees, they could have made dual tees on every hole, adding some more variety in hole lengths.
Other Thoughts:
This was a surprising little find for me when I was staying with family out in Adrian, which is an area devoid of decent disc golf...thus, I made the trek 45 minutes north to this state park, gladly paid the $10 to register my Michigan family's vehicle since they didn't have the sticker, and was greeted by some locals just finishing their round (again, the way the course loops back to the parking lot is really convenient if you don't want to lug a bunch of bug spray/beverages; just bring what you need for 9 and reload at the turn!), and they warned us to have bug spray. They weren't kidding! The mosquitoes are TERRIBLE out here, but the ground was really moist and the humidity had been high, so this can't be considered a con any more than the presence of bears can be considered a con at Highbridge or rattlesnakes in desert courses. It's a nice walk through these woods, and the large mature trees are beautiful. I didn't notice a ton of wildlife, probably due to the proximity to a busy campground and beach, but you still get a feeling of "being away from it all" while you're playing. The Back 9 could definitely benefit from some clearing of those thorns by the fairway edges, but overall the fairways are really generous, and the design does a reasonable job of incorporating the fairway-splitting trees into forcing different lines; there just isn't enough creative variety in the lines required to merit a higher rating from me. I'd say the course was really about a 3.25, but not a "wow" 3.25 where I'd bump it up to 3.5. Dual tees and some new pin placements would definitely benefit this course.
One cool thing I noticed on the welcome kiosk by hole #1 was a note from the state asking for help from local DG clubs on holding leagues and tournaments in the park...it had the tone of someone who saw the potential in the course, but wasn't sure how to go about promoting it and holding events. If you're a local, contact this park and get your voices heard! I'm positive that a really nice course with drawing power to traveling players such as myself can exist based on the underutilized topography of this region. There isn't a lot to keep me in the Adrian area as far as disc golf, so when I'm out there visiting I'll probably consider coming back up here if I don't head towards the Ann Arbor area or Toledo...I've still got a lot on my wish list in that area, so I probably won't be back until I've reviewed everything in the area.