Pros:
With a casual collection of decent holes, Pomona makes a real quick round. Despite being near a campground in a somewhat rugged area, maintenance is good and there's next to no danger of lost discs. It's a great beginner course, while still offering decent challenge to advanced players.
There are several lines to choose from on a lot of the holes. With scattered trees instead of thick woods, no hole is super obstructed, but there are plenty of options. Even if you don't throw very far, the smaller trees will make things fairly interesting.
Slight elevation change is used on a few holes, namely 2, 5, and 9, to make the holes a lot more spicy. Hole 5 is my favorite, a downhill shot with several options to choose from.
It feels like this course does a good job making park jobs difficult, and you might be choosing a line that will put you in range of a testy putt. Or if you take one of the outside lines, getting close to the basket is real hard.
Cons:
There aren't any long holes, and there probably could have been sometimes. No hole is a big challenge for someone with a variety of shots to get a birdie. The hardest hole is probably hole 9, but even that is pretty reachable. Having so little distance variety is a little annoying, too. Even though I like hole 5, it could have been much shorter and more technical. And some holes like 2 and 3 would be much better with a little more distance.
On some other holes, there's one line with nothing in the way. Holes 3, 4, and 8 are the main culprits here. Sure, which line that is does vary on those holes, but it means the course is not difficult at all. Also, holes 6 and 7 don't have much doing for them, being just completely open with trees that only pretend to block shots.
There aren't any tee signs, just the hole number at the back of the tee. Navigation isn't hard, but knowing the distance would help quite a bit.
Other Thoughts:
For being in a park with a lot of non-DG related activities, this course isn't bad. The design decisions are just about perfect (and there are some small trees that are likely to make a few holes a little more interesting in a few years). You're still not getting much for the $5 fee to enter, but if you do come here, you'll be glad you did.
There are some "loaner discs" near hole 1. Don't count on them because they're not real discs. But hey, if you use them, the course becomes a whole lot harder.
While there aren't any bombers, some safari fun could easily make a few. An extra three holes playing to the existing baskets is completely within reason.