What I personally like and how this course stacks up:
1) Holes with good risk/reward -- B+
2) Holes that have rewarding birdie opportunities -- B
3) More wooded than open - lots of variety of shots required caused by hole shape and topography -- A
4) Natural beauty (Appalachian beauty preferred) and seclusion -- A+
5) Multi-shot holes with defined landing zones, good risk/reward and multiple options to play them -- B

I ranked this course subjectively based on my own personal enjoyment factor...more accurately my "personal addiction factor". Since I have played a decent number of courses (115 18-hole, 50 9-hole as of early 2009), my hope is that players/explorers who have similar tastes will find my ratings list helpful as they chose courses to play and explore.

Over time, I expect to fill some of my reviews in with more descriptive verbiage...if what I say adds anything to what has already been written. For now, my list is more important to me than the verbiage of my reviews.

I fully expect others with different tastes/philosophies to disagree with me. See my profile for my rating philosophy.

There are many pros to this course - well stated in previous reviews. To me the most significant pro is the flexibility and resultant change in difficulty from the short to long tees, and from the short to long pins. In the short layout -mid 40's are possible for top players, but even that layout requires well placed, accurate drives. Move the pins back, and even from the short tees, 60 isn't a bad score. The difference is really astounding - and the longer layouts definitely put a premium on the second shot. Leave yourself a little off the fairway on the drive, and carding a three becomes a significant challenge - and that happens all over the course. To score well here - you must exhibit control, both off the tee, and the approach. Lack of a water hazard is far outweighed by the many difficult greens where sharp elevation changes force touch and control into your approach.

Lack of tee signs and permanent teepads are the biggest cons to the course. But there has been some recent work to a few of the tees, so we remain hopeful that work will continue.

There are other amenities, plenty of parking, bathrooms, picnic areas, well water on the course (right side of #10 fairway), and little crossover with other park users (although the occasional biker/equestrian may come through on the back 9).
From a difficulty and technical standpoint, Patapsco is a 5. There is little if any repetition. From a basic course amenity perspective, it lacks the necessary "stuff" to keep it rated that high. Like so many other quality courses, it continues to improve with time.

This is the course to play if you want to be tested.
There is huge distance, there are tight fairways (sometimes on the same hole).
This is how a disc golf course should be made.

This would be a 4.9 or maybe a 5 except for crappy tee-pads and tall grass.

The only other con is this is NOT a newbi friendly course. If you have friends that are brand new to the sport take them to Calvert, or Druid or Bluemont or Burke Lake.

If you think you got game bring it out here and see how good you are.

Large wooded course with a great variety; uphill, downhill, trees, wide open areas, dog legs, and 2 tee pads. 8 is a nice down hill shot, 12 hugs the edge of the woods, and 18 is a long shot into a patch of trees.
Very few thorns and ticks which infest other Maryland and NOVA courses.

No signage causes some frustration, but you can usually see the next tee from the basket. There is a lot of back tracking back to tees from the previous basket.
Course did not have the personality or uniquness of Bluemont, but it has a consistant quality through 18 holes.
You can see the river from the course, but the course never utilizes any water hazards.
Tees are gravel, but were usually lengthy enough, some were filled with mud.

Lots of deer. We saw a buck, 2 does, and a fawn on hole 18 and large does on holes 10 and 11.
Course is one of the better courses in the area, but it needs signage and a few signature holes to become a 5 out of 5.

Great course when you really feel like airing it out. Most holes I would consider a par 4. Good mix of left and rights. Like Jaymon 1 points out, the only thing really missing is a water hazard. You can hear the river on some of the back 9 and its very private and peaceful. Deer spotting is common.

If you can't throw far, it will wear you out. More for advanced players.

17 through the woods with the long pin setting is about as hard as they get.