Pros:
Tyler State Park offers everything you would expect from an upper level course. It is well maintained, with concrete tees and nice signage displaying all of the pertinant information for each hole. The fairways are kept very clean, and nicely built walkways help move players through the course without causing unnecessary wear on the landscape. The layout plays primarily through the woods with a few open field holes that help mix it up a little. The fairways are fair and the rough is not overly punishing.
Cons:
While the course does everything right to fit the mold of a nice course, it does nothing to really set itself apart. There are no real signature elements and no "wow" moments. It's fun to play, but not overly memorable.
Each hole features three unique pin placements, but only one basket rotating among them. This normally doesn't bother me much. But at Tyler, each pin location represents a very different challenge. The A pins play nicely for beginners, the C pins are tough championship level challenges, and the Bs fit nicely in between the two. But with just one basket, players do not have the option to choose the best layout for them. When I played, the pins were fairly evenly mixed between all three layouts. This gave me a nice sampling of each, but left me feeling like I was missing out on a lot of what Tyler has to offer. And for stat junkies, it makes comparing scores very difficult. The layout I played was just 1 of 19,683 possible configurations (some of which are better than others).
The course shares space with a few high volume walking trails. The trails don't directly interfere with the course, but I did encounter a number of pedestrians that chose to go off the paved trails. Be prepared to exercise a bit of patience, especially on a busy day.
Other Thoughts:
This is a fun place to play, regardless of what layout you find it in. Although, I was a bit surprised by how highly it is rated. At no point in my round did I feel like I was on a truely elite disc golf course. It certainly ranks among the better courses I've played, but it is not at the top of that list.