First, several disclaimers: they're still finishing up tee and basket placement, so only a few tees and no signage at all. It sounded like they were essentially done with the design part, but the lady at the camp office did a lot of apologizing on that score. But, as a result, I wasn't able to play the whole course, as I couldn't find some of the tees.
Also, the course is beyond my skill level. I'm going to try to be impartial and describe it the way most people would look at it, but it's still something keep that in mind.
Black Bear is set in Shawnee Park. I love seeing disc golf in state parks, in because not only do you usually get an established forest, but parks have some of the best scrub land available: you know, the land they thought was useless 100 years ago, which usually happens to be great for disc golfing.
This course winds its way around several steep hills, and definitely gives you exercise going up and down them. Roughly a third the course is uphill (and not gradual uphills), a third of the course is downhill, and a third of the course is flat. Most of the course is wooded, and it includes some long, densely wooded throws.
I thought they included too many uphill throws, although I won't swear that it's a full third of the course: half of the ones I'm calling uphill throws I couldn't find the tees for, and am only basing the number on where the course map showed the tees to be. But even counting only the ones I found, I think they put in too many uphill.
With the notable exception of holes 1 and 18, both of which are somewhat flat and totally open, most of the level throws are alongside the hills, so errant discs can end up going down the side. The flat holes tended to be the longest ones.
Most of the downhill throws were designed so that if you overthrew, you would seriously regret it: baskets being placed with dropoffs or water behind them, or the angle of decent continuing on for quite a ways past the basket.
Overall, I liked that it seemed like you needed to mix up your approaches to each hole, even though the course is almost all wooded. However, I thought that they overused certain design elements (most notably steep uphill throws and baskets in dangerous spots on downhill throws), and that there were just too many holes where a missed shot could easily mean you were chasing a disc down a hill.
As was mentioned earlier, they don't have tees or signs in yet, but they swore that they'll be in soon. When they do get signs in, they really need to put in "next tee" signs, as the course criss-crosses in a couple locations, and there are a few long walks. If you get there before signs go in, hole two is across the road and up the hill a fair distance from hole 1, just follow the path. The basket across the road from hole 7 is #12. Hole 8 is past the basket for #12; follow the curve of the road/parking lot until you see the clearing to the left. 8-12 play somewhat counter-clockwise around that hill, then go back to where basket 7 was, and follow the path that's just below to the other road to get to #13. I never found the tee to 13, but it looks like it's near that path, and 13 is a long throw mostly following that path.
Or better yet, see if someone in the camp office can get you a course map.
Lots of places I was pushing through thorny briars. It was the wrong time of year to easily spot any other problem plants.
Is it worth the trip? If you're local, or passing through the Portsmouth area, yes, once they have signs in, hopefully by summertime 2017. But while there are a few unique and fun holes, I don't think there's enough there to make a special trip for, unless you're looking for a course that's a bit more challenging than most.
2020 update:
Work took me to the area again, so I tried to give it another try... but didn't succeed. I gave up quickly due to the large amount of poison ivy on the course. Signage is also still a problem, and the camp maps are worse than they were when the course was new. There are primitive signs up now, but they don't show much, and I was still guessing at how to get to the next hole each time. There was a sign indicating the long path to hole #4 (presumably to help you avoid getting onto the crossing path, but that's where I gave up.
If someone in a local club or park management sees this, please get better signage up! Most notably, 'next tee' signs on all the long paths, and possibly better maps in the park office. (Or if scouting programs still do eagle scout projects, suggest it as a possibility to a local scout troop.)