Pros:
-Best course/park interaction I've ever seen (a friend even played with a big weekend park event going on, and that only prevented him from playing holes 1 & 18)
-Good assortment of holes: There are plenty of long shots (mostly with line-carving required) as well as shorter ones. The very tight wooded holes and use of some elevation are a very nice touch. The par 4s and 5s make for good golf.
-Polished: little room for improvement in amenities (tees, baskets, tee signs, course flow, etc.)
-Even without the over-water tournament hole, it's a blast to be able to play the holes you've seen Paul, Simon, Ricky, Jerm, and the other pros throwing on YouTube. Paul's eagle on 2 is already impressive, but just wait til you've thrown it yourself.
Some favorites: 1, 3, 5-9
Cons:
-Can be as frustrating as any other challenging course
-Walking from 8 to 9 crosses 3's fairway
-I didn't like some shots because they basically require going over big trees instead of through (esp. holes 2 and 16 long), but they were still very good holes
Other Thoughts:
First of all, the City of Rockwall has done a great job taking care of this park. Busy public parks attracting many visitors don't always work well with disc golf, but I was amazed by how well Mr. Houck laid out these holes without ever endangering other park users. As my title says, of all the courses I've played this sets the standard for elite disc golf courses on public property/parks. There were some walks between holes that seemed long (1/2, 8/9, 17/18), but I found that an exceedingly small price to pay for such an adeptly laid out course without any squeezed-in holes. The 8 to 9 walk actually crosses 3's fairway, but it's fairly easy for both throwing and walking parties to see one another. The only problem would be if Paul/Simon/Eagle were teeing off on 3. In that case, you're probably not safe anywhere on the course. Overall, I was fine with this, as I'd rather have disc golfers encountering other golfers instead of throwing over paths, playgrounds, or baseball fields.
Overall, I find playing Houck courses interesting as an intermediate player (I played both Trey Texas Ranch and both Selah courses on the same trip). From shorts, I enjoy the golf but am generally able to finish under par and thus desire to stretch my game a little more. From longs, these courses range from reasonable beat-down to straight-up annihilation. Harry Myers was no different, though I was fortunate to escape with just the beat-down. I played a fairly mediocre round from shorts but still managed to shoot one under par. When I came back to play longs, the course ate my lunch. On the par 5 3rd hole, I was punished for not making it over the trees. After a couple escape shots, I took advantage of a very nice approach to get double bogey. On holes 16-17, my already struggling round fell apart, partially due to a substantial headwind which made "over tree" distance difficult. I was 9 up after 16, but gave up keeping honest score on the par 5 17th. Basically, I need to add at least 50' consistent/accurate distance to max drives and improve my pinpoint woods precision to be able to score decently here. I don't think any disc golfer will find this course easy, and the short tees alone will provide sufficient challenge to most of us.
As such, this is the kind of course that is a little too challenging for a peaceful afternoon in the park kind of round. Nevertheless, most golfers who come here know what to expect and this is the right place to challenge or showcase your skills. Whether you discover some weaknesses in your game or are totally up to the challenge, Harry Myers is one that will make you want to return. (As a side note, The Cedars in Fate, TX is only ~4 miles away and was a challenging course as well. Goes well with HM.)
Rating: I settled on 4.5. It's a great course, but doesn't quite hit the 5 mark. I've given a lot of 4s, though, and the quality of the par 5s (especially hole 3) and multiple par 4s make it hard for me to justify anything less. Add to that the fact that there are multiple tees per hole, great signs, multiple signature holes, and an overall great disc golf experience in a nice park... and Harry Myers is undoubtedly special. Many thanks to Rockwall, which I assumed funded the course, and to John Houck!