Pros:
Heymann Park DGC is situated in a well-groomed park a quick drive from numerous quality Lafayette courses. What distinguishes Heymann from these others is its penchant for long open drives (six holes over 400'!), some low ceilings (brought about by sprawling oaks), and the presence of water: several holes play around a small lake, which helps shape a few lines and creates some precarious approaches. The potential challenges of this hazard are maximized, and the shorter, tighter shots that take place in its vicinity provide a nice change of pace to the predominant hole types at Heymann: open bombers and low-ceilinged fairways guarded by the aforementioned oak branches. The course has a wide variety of distances, which is nice. Big arms will appreciate the opportunity to air it out here.
Navigation is relatively straightforward, although a map comes in handy at times.
The course is easy to get to and easy to find within the park itself. Parking is plentiful.
Cons:
Heymann plays across quite open terrain - perhaps the most open I've ever played - which severely limits the challenge and level of interest it can provide. While a few holes run near sidewalks that provide intuitive out of bounds, the extensive OB mentioned by previous reviewers was largely unseen on my visit. Without these, the few OB that do exist - water included - are easily avoidable, save for a wary approach or two. Obstacles occasionally restrict your line off the tee, but these are singular enough to often be easily avoided without any shot shaping. The low ceilings you contend with will certainly restrict your drive, but even a passable roller will get you through to the other side unscathed: the flat terrain and lack of obstacles make it easy to roll to safety. From there it's usually a wide open approach to the basket. I've never so easily three'd so many 400'+ holes.
The lack of distinct lines and forced shots means the course plays more like field work at times. A "bombs away" feel predominates. Risk versus reward only really enters in when passing by the water, and even then its relatively mild.
The natural tees were occasionally muddy on my visit, and will almost undoubtedly turn swampish after a decent rain.
As previously mentioned, the course plays through a central area of the park, adjacent to and across roads, walking paths, picnic benches, and bathrooms. There's a lot of opportunity for conflict with non-disc golfers, although to be fair, the park was nearly empty on the Monday evening I visited.
Other Thoughts:
Heymann offers you a chance to let loose and uncork a half a dozen or so big drives. It provides a casual round that contrasts the greater challenges of Pa Davis and Acadiana Park. My assumption is that the locals were seeking something different to the tighter feel of those two settings, and in that they've succeeded. Were I a Lafayette resident, I can see making the occasional visit to Heymann to unfurl a big drive and boost my confidence. If you're passing through, there are other, better courses to hit in the area, but they're all so tightly packed that you can easily hit four, including Heymann, if you make a day of it.