Pros:
This course lies in a mostly flat triangular patch of parkland stranded from the larger parks by being cut off by the 80 business freeway and the railroad tracks. Much of the course seems to be leveled out and has drainage structures. The course is hard dirt with the vegetation mostly dominated by grass which the regulars get mowed from time-to-time, and some nicer old craggy oak trees on a higher patch of ground stretching from the 1st tee, though some seem to be dying and falling over.
The mixture of the train tracks nearby and the large concrete sweeping street bridge going over the tracks, along with the horse farm in a working class neighborhood combines to make for an interesting atmosphere. I rather like it, because it is all down to Earth, totally unpretentious, and just is what it is.
This course is rarely as busy as the other courses in the region, which is the most-cited reason why players on the course say they are playing it. Another reason some of the locals enjoy this course is that some of the holes are longer than typically found on other courses in the region, and the open space gives you a chance to air out your longest throws.
There are some very good, and also very friendly players on this course. They have a doubles every week, and are very friendly to visitors and newbies. They also seem to provide mentorship for some very good young players who frequent the course. One of the world's top pro players (Josh Anthon) can also be found practicing his drives out here when he isn't away on tour.
11/2009 UPDATE: Two holes upgraded after fixing some basket thefts, holes 3 and 9 now have multiple basket positions, with both new positions being longer than previous. Long 3 is now the longest hole on the course, at 440 ft. Long 9 is about 400 ft.
Cons:
The biggest negative is that the holes are mostly open, with few trees or other obstacles. They've done the best they could packing 9 fairly good length holes on this land, and putting the fairways near as many obstacles as they could, but some holes are inevitably wide-open due to the park land itself.
When the course grass is long after the rainy season it can be difficult to find your disc in the longest hairiest patches. In the dry season, when the grass is unmowed, you'll get lots of annoying burrs and stickers in your socks.
There is not a lot of shade on the course, although the tees are mostly located in shady spots. Be sure to bring sunscreen if you're sensitive. This place can get searing hot in the summer.
Other Thoughts:
There aren't many nearby restaurants or liquor stores, but if you take Marconi over the tracks across the business-80 and continue for about 1/2 mile on the left (I think its Howe Ave and Marconi) there is a liquor store and taqueria that are worth stopping at if you're hungry or thirsty. If you want big corporate chain fast food you can go south down the business 80 one exit, and take a right until you get near Del Paso.
A disc throw over the fence toward the tracks can be difficult to retrieve, and you can be arrested for trespassing on railroad property. Play the careful routes to avoid this hazard. If you absolutely must retrieve one, look to be sure there isn't a cop or security patrol watching. Sometimes there are gaps worn in the fence, but other times they are repaired and the fence can be difficult to traverse. But the best policy is this: don't throw over that fence.
Homeless people occasionally sleep in the bushes on the hillside along Marconi as it slopes up to the bridge (the right side of the #2 fairway). They are always friendly and don't mess with anybody else, so leave them (and their belongings) alone...it is difficult for them to find places to sleep in Sacramento.
This is the only dedicated for disc golf course in the city of Sacramento. They tried to install an 18 hole not too far from this one, but it was overturned by a powerful lawyer who enjoyed participating in the gay activities at that park. If you play and live in Sacramento, call or write your councilmen and the mayor to push for more courses.