Pros:
Every hole on the course is a winner, each uses the beautiful land to great effect. There is not one filler hole. Lots of variety is on offer, with a variation on length, turn, and elevation. More of the holes are multi-shot par 4's and 5's than par 3's, with properly challenging fairway shapes. This course is all about shot placement, and that, in my opinion, is the future of disc golf. The fairways are fair, and aren't very tight, providing multiple throwing lanes on several holes, and a few trees left in the fairways to provide proper challenge. Getting off the fairway will cost you strokes, but not too many, and properly punish bad shots. If you can execute the good shots that the holes were designed for you to throw, you will score well here, if not, your scores will suffer. This is a championship level course, and a fine example of such. Thanks to John Houck for the great design, and to the PDGA for maintaining such a great course.
The tee pads, hole signs, baskets, and benches at every hole are all top notch. These are the kinds of amenities all courses should have. Every basket has a flag on top, making it easier to spot through the trees, and giving you an indication of what the wind is doing. There are next tee signs at every hole, as well as maps and scorecards readily available on site, so navigation is a breeze, even with a couple of long-ish walks between holes.
An awesome club house with well stocked pro shop, selling anything you would need for disc golf is on site, and includes a really cool museum, and the PDGA headquarters.
There is a large area behind the clubhouse with several practice baskets, as well as an adjacent covered picnic area with several picnic tables.
The last time I played it was a chilly overcast day, after a little rain, and there were no issues caused by the wet weather, so the course holds the moisture well. There were also no signs of erosion on the course.
Cons:
Holes 6, 11, 12, and 13 play fairly close together, and hole 16's tee is a little close to 17's fairway, but it's not so close that it's a real problem.
You can see 13's basket from the tee on 11, but 11's basket is to the left, sitting a little lower, so don't throw to the wrong basket. This is clearly indicated on the tee sign.
There are a couple of long-ish walks between some of the holes, but they're easy walks, with signs pointing the way the whole time.
A very minor point is that there are no trashcans on the course, but I also didn't see any litter, so I guess people are smart enough to pack out what they pack in here.
Other Thoughts:
With all the par 4's and 5's, it's a long course (around 9400 feet) and will take time to play. You will also make a lot of throws at full power, probably twice or three times as many as at a typical par 54 course, so it can be tiring. Trying to play all three IDGC courses in one day can be a bit much. It would be a great place to spend a weekend camping out and taking your time with the courses.
It costs $5 to play at the IDGC per day, if you aren't a PDGA member or resident of Columbia County.
There are restrooms inside the clubhouse, as well as a water fountain outside on the deck behind the pro shop.
The museum is worthy of an article of it's own. If you're interested in the history of disc golf, and Frisbees in general, it's a must see. There is an impressive collection of discs from the last 100 or so years, as well as memorabilia from the last 35+ years of disc golf.
There is a cool campground inside the park just down the road from the clubhouse, so a camping weekend would be great, if you're into that sort of thing.
The nearest store or restaurant is about five miles down the road from the park entrance at Highway 221.
Everything about the IDGC is done right, and is an example of how courses would be in an ideal world, from the amazing piece of land it sits on, to the tees, signs, and baskets.
Bottom line: The W. R. Jackson course is a destination worthy course on it's own, but combined with everything else about the International Disc Golf Center, it's a must play for any disc golfer who enjoys traveling to new courses, and wants to play the best of what's out there.