Pros:
Located in a large park that features ball fields, tennis and basketball courts, a walking trail, a nature preserve, a playground, port-o-lets, and ample parking, the DG course(s) at Twin Creek use the woods adjoining a beautiful creek, so there is no overlap with other park activities. Twin Creek's Black course has been cleverly blended in as an overlap and extension of the existing (Red) course. Essentially, you start at the first tee and shoot to the second basket, then shoot from the third tee to the fourth basket. The next four holes are identical to the Red course holes with the exception of having an alternate tee for Black #5. Black # 7 bypasses one basket, finishing at Red #11, which has a blind pin position from the tee, with the creek running by only 25-30' to its right. The courses share the next six holes (and the final two) in common, but Black 14-25 are all new, and some of those have variable pin positions and alternative fairways.
Signage here is incredibly well done: simple posts are painted red and/or black (as are the 'chastity belts" on the Discatcher baskets), so you can just play by color. Distances are clearly marked. Wooden 'next tee' arrows hanging under the baskets are likewise color coded, and there are other signs when needed. Tees are concrete and well-sized for the distances. There are trash receptacles, and an occasional downed tree serves as a bench.
The Black course really starts to shine on hole 14, a long anny (rhbh) finishing through a dozen small guardian trees in front of a mound-raised basket. Following the trail to your left (for both), you'll find 15 to be a park-style hyzer, and 16 to be an open 300 footer that shoots into a gap in the woods. 17 in the long position could be deuced if you have a precise 440+ foot S-curve in your bag! A couple of holes with beautiful views of the swiftly flowing creek later, and you'll find the real challenge: #22 in the long position sits 393' away from the tee, across a sandy (hopefully dry) creekbed, with the basket on a ridge only a dozen feet short of that creek you just thought looked so pretty! #23 in the long position hyzers over that (not always dry) creekbed again, and #24 finishes right beyond a pit lined with tumbled-down rocks reminiscent of the miniature Stonehenge from Spinal Tap. The course map suggests flipping for which of the fairways to use on hole 25 (the one with the cool, pentagonal teepad), then you rejoin the Red course for holes 26 & 27.
Cons:
The naturally sandy soil along the creek can become unexpectedly slippery underfoot when overly wet OR dry, and the relatively heavy foot traffic (on the red course, primarily) makes for some muddy paths and fairways.
The overlapping holes mean that Black course players need to be cautious about throwing on groups ahead of them, and to be mindful of throwing higher speed stuff in the woods on the tight half of the course.
Other Thoughts:
Located just southeast of Germantown, OH, this course is a little bit remote, having few major roads coming over (directly) this way off of the interstate, so it might be best to print a map of the area or use a GPS to get there.