Pros:
1. Variety. Grey Fox is a superbly designed course in an excellently maintained county park and will test every shot you think you have, and perhaps you will even find yourself in situations where you have to get creative and try something new. From wide open undulating fairways to moderately heavily wooded "airways," and from ace runs to defined landing zones on some longer holes, you'll never find yourself bored out here or thinking, "Great, another one of these!" With two pin placements on every hole that drastically change up the tee shot, there are "technically" 36 unique holes available to play here. When I played, the course was set to all shorts (except the awesome island green on #13, which was still long, thank Flying Spaghetti Monster!) for the Women's Global Event (I was caddying for my wife), but in my couple rounds caddying and playing I took note of the long sleeves and even played a few shots from the tee pretending they were in place to get a feel for some of them. Elevation is present on most holes. A few holes are conducive to different throwing styles, allowing righties and lefties, as well as overhanders, all an equal opportunity (though some bias is obvious; see Cons). Some particularly memorable holes were #5 with a neat little tunnel shot over a little hump (it was, for lack of better description, a cute hole that had potential to ruin your day), #6 requiring a steep uphill RHBH anhyzer to a blind green, the unique island green after a tricky downhill RHBH anny on #13, and the picturesque signature #18. A slide near the playground drops you in to the tee area for #16 if you want to "let the kid in you out." Definitely a course that you leave knowing you'll be back, not only to experience new hole configurations, but to get revenge on the holes that robbed you of that deuce or par save (there are plenty of places for this to happen)! This course coupled with Red Fox, as many other reviewers have noted, has a distinct "3-course meal" feel to it, with each 9-hole loop seeming to have its own flavor.
2. Concrete tees. Nice and level teeing surfaces, no cracks or pooling water, and the follow-through areas off the tee were pretty safe and comfortable.
3. Dual pin placements. As above, these change things up considerably on this course, usually for the final 30% or so of the hole. The long pins add more challenging tee shots and approaches, and it seemed many eliminated the "easy" deuces available on several of the short placements. The sleeves were all installed properly and undamaged.
4. Tee signs. These were very helpful not only on the few blind holes, but in showing me how the long pins would play since they weren't available to me when I was here. They gave distances and an overview of the hole shape and were almost all still in place (a few were missing but had little maps drawn on the 4 x 4 tee post in Sharpie).
5. Baskets. The Chainstars were installed properly and undamaged, didn't seem to be rusty or heavily weathered, and caught well.
6. Maintenance. The drive into the course should be your first clue that things will be immaculately groomed, and this county park setting seems perfectly suited for disc golf. Even the "heavy-in-chucker-traffic" Red Fox was surprisingly well kept and clean. For being free to enter the park and play here (donations box available), the County certainly doesn't seem to skimp on the upkeep.
7. Amenities. Scorecards and pencils are available at #1 and #10 (though not always in stock, as was the case during my 2-day visit). Trash cans on several tees. Restrooms are located throughout the park, including one somewhere off the main road near #4 and one on the path from #15 to #16. This multi-use park has plenty of other activities and pavilions/picnic areas for the whole family to enjoy a day out here.
8. Navigation. It's easy to find the parking for the courses once you're in the park, and navigation is pretty simple (I'm sure the scorecards, when available, have maps to aid travelers and first-timers)
9. Red Fox as another on-site course is a bonus (I guess) and could be used as a warm-up for approaches and putts on Grey Fox, but you might feel rushed and unsafe with the abundance of chucker traffic.
Cons:
1. Design. There seems to be some bias towards RHBH anhyzer (RHFH/LHBH) shots off the tee, which is okay because those are challenging shots (for me) to consistently execute, and the varying distances and hole shapes keep it from getting too monotonous, but there is undoubtedly a favoring of those particular shots.
2. Navigation. There are 2 areas on the Back 9 that can be confusing without a map when it's your first time, and they are also the lengthiest walks between holes: From #15 to #16, there is a walk along the path up to the restrooms and playground, and from #17 to #18 is another potentially baffling route (especially if #17's pin is short, making it possible to think #18 is up the maintenance vehicle road that leads nowhere except over to Red Fox). A map should eliminate any mix-ups.
3. Safety. Some minor issues with (OB) park roads weaving throughout the complex, but fortunately nothing major like conflict with other park activities (unless you really shank one into the tennis court on #11!).
4. Single tees. I'd like to see this spacious park utilize a little more and provide some greater variety, and dual tees could significantly change things up out here. This would boost the hole potential from 36 to 72 if done right (i.e. tees don't just change the distance, but the entire shape of the hole).
Other Thoughts:
This course is not only a great recent addition to the Wisconsin DG scene, but also to the Illinois DG scene with its sparsity of "good or better" 18-hole courses. With dense population to draw from and free to play, this course is understandably very popular and busy, yet remains in spectacular shape. The frequent changing of pin locations keeps it "fresh" out here, and I'd be proud to call this my home course -- and it would definitely do wonders to have all those different shots to practice all the time!
I pondered my rating on this course for a while, and while I really wish I could give it a 4.25, I'll have to settle on a 4 since there are only single tees.
I highly recommend stopping here if you're anywhere near, and for those of you willing to travel, the drive is worth it. I'll definitely be back!