This is the basically the same not-so-rave review I wrote for the Blue Course.

Lydle Gulch DGC is located in a very rough wilderness area across the street from the boat launch at the Lucky Peak Dam. The area here is rugged, hills with sometimes thick and nasty ground cover. The course is just now being constructed. The "Blue" course features blue Discatcher baskets while the "Gold' course features yellow Discatchers. That might help in the future sometime.
The tee pads on the Gold course are currently just scraped off areas. I'm sure the course builders will eventually get these pads in just like the great pads that are being built on the Blue. There is a huge pile of rocks and patio blocks up near the first hole.
The course tries to follow some trails but it's difficult to navigate. The baskets are extremely hard to spot up in these hills. This course looks as though it's built for Intermediate players and above. Beginners need not apply.
There are red stakes marking the way to your basket.

The wind was howling, blowing my shots all over the place. I think it'll probably always be a blowin up here.
The terrain is incredibly hard and difficult to walk through. After playing just the first few holes, my shoes and socks were so covered with burrs, I later sat down and took more than an hour painstakingly picking these burrs out, one at a time. I would never again set foot on this gulch without gaiters! I'm still picking these burrs out of my socks after three weeks and several washings.
There is not a stitch of shade up here.
No water other than the beautiful lake behind the dam.
The ruggedness here is going to eliminate most players from ever coming back.
Someone is putting a ton of $ into the construction of this course.
Who's going to maintain it way up here?
A spotter is a must.
A 1000 foot hole across this landscape. Good luck finding that disc. OK, technically speaking, you probably can't throw 1000 feet
Because of it's isolation, it's going to be easy target for vandals. Everything needs to be built sturdy as hell to last.

Other Thoughts: People scoffed at Gustave Effel, the builder of the Effel Tower. I believe many disc golf players are scoffing at whomever is building this course. Between the ever present winds, super rugged terrain, distance from Boise, incredible problem with burrs, costs and tremendous manpower needed to construct this course, I personally believe this course will become ONE GIANT, EXPENSIVE WHITE ELEPHANT!

I have to think that only the most hard core players will ever brave the obstacles and venture up here. And I don't see them coming back too often.
Perhaps I'm wrong and the Lydle Gulch courses will become the Effel Tower of Disc Golf Courses. Unlike the Effel which is smack dab in the middle of Paris, the gulch here is a little off the beaten path but still might draw crowds of players. Only time will tell.