Pros:
As every other post points out, it is in a man made cave. Now this is a repetitive thought, but let me try to explain what this really means:
Driving around a property with 10' high fence with barb wire over the top, you get the feeling you are going into a compound. A exclusive place, and, you really are.
As you drive through the first cave getting to the property, you can not help but just look and go, wow. At the end of the bridge, a little sign says, 'Not responsible for injury/accidents", and now a sense of danger comes into play. As you walk to the entrance, security is there to meet you and check your bags, amplifying all paranoid thoughts going through your head. Then as you enter, you see projections of tv on the cave walls, you see the potential for a legendary place to have a party.
This alone makes the course worth playing and a 3.5 at least.
Other pro's, lots of garbage cans, a few bathrooms, and a place to buy a drink or some chips in the middle of the course.
There is great flexibility in using portable baskets, you can set up anywhere.
The cave walls and ceiling is high enough to bomb in. No excuses found in that issue.
Massive potential.
Cons:
You can tell whoever has the course is really not a disc golf person. Maps are pieces of paper with a line and 2 dots. The scorecard and map was like reading a chinese newspaper. Getting around the course was a nightmare.
Lighting - First, I can understand that lighting can run into big energy $. But not if you plan and use the lighting wisely. Using little lights to find your disc may be cool on a midnight round on a course you know, but NOT when constantly throwing into the unknown. I got so sick of walking with a flashlight looking for the basket before I got to tee off. The tee, fairway, and baskets should all be well lighted, while the rest can be shaded and dark. You would still need a flashlight, but you wouldn't have to worry about the light taped to your disc will fly off, and you will lose your disc.
Course Design - If someone, like a David Mac, was brought in, the place would become legendary. Right now, finding the next tee is an unwanted adventure. Signs are paper and sharpie. Not much class in the design of the course, and a lot of confusion.
Tee Pad - There is none. Rubber mats would make a world of difference in A - Giving a tee and B - Defining the true location of the tee. Rubber mats would be movable, to change things up.
Baskets - While the baskets are in decent shape, they are far inferior to say, a Titan portable by Gateway. Far inferior. A move to Gateway Titan Portables would not only increase the quality, but would allow for tournament play.
Lack of Imagination - While a few holes are unique, mostly, you are just throwing around pillars of rock in the dark. It would not take a whole lot of thinking for this to be a unforgettable course.
Other Thoughts:
It really looks like the course is just... there. Not much behind it except the novelty and making a little $ off of that. If the cave owner was more of a DG player, It would be a LOT different. I never got to play Flyboy, but if the owner of that place had this place, wow, what it could be.
Sadly, that is all this is right now, a mound of potential, LARGE mound of potential, but right now, barely deserving the 3.5 I am giving.
This 'could be' great, but I worry that it is what it is probably always going to be, not great.