Pros:
-currently multiple tee pads on 11 of 18 holes (also, hole 8 has two baskets including one on a 10' mound, probably the course's signature hole)
-good use of available elevation, which is extremely rare in this part of the world
-very well maintained, including new benches that are way better than typically found on courses; very easy to find trash cans and seating
-navigation/flow is logical
-I'm a sucker for nature, especially Oklahoma trees & birds in the springtime; this is a beautiful park so it's a beautiful course
-little water danger
-includes a nice field with two baskets in addition to a separate putting area with basket
-the tee signs are generally temporary "tournament" signs, but they've continued to be up for over a year
-good baskets and good concrete tee pads
Some favorites:
1) Start tough with a wooded tunnel: early trees/mando and then some late guardian trees before a basket on a slope. Definitely favors RHBH or LHFH.
2) Everyone likes a good open distance shot on a wooded course, right? From red, this is only 460' across an open field. From gold, at least 550'. Don't forget the wind! Also, there's an annoying slope down from the basket that punishes hot approaches.
6) One of the holes where both Red and Gold are reasonably different but both good. From Red, it's a pretty standard RHBH hyzer. Just make sure to miss the early trees and get enough forward glide to get to the basket. From Gold, it's a very tough initial tunnel that requires a slight right turn with at least 200' after the tunnel.
7) The shot from Red is particularly good, with a left and right fairway, but plenty of tree danger for both. Plenty of shot options, just make sure you hit your line!
9) 330' to 350', with initially tight fairway opening bit before a slope down into a wooded green.
11) From Red, probably the most aceable hole on the course: a fairly tight, 180-200' shot. From Gold, forget about the ace! Long initial narrow fairway/tunnel with another slight right turn and continued fairway toward the basket.
12) Fairly straight tree-lined fairway, with late trees before opening up for the basket. There's probably a high line here, but it just begs you to hit your "straight shot."
18) Elevated tee, about 430' with tree danger off the fairway that can result in plenty of scramble opportunities after overzealous and errant distance attempts.
I've still never managed to score a two on 1, 2, 6 Gold, or 11 Gold. Challenging holes, but very fun.
Cons:
-no bathrooms - I might even be wrong about this, but I don't believe there's a port-a-potty or anything
-park users occasionally walk the fairways, even though the course stays away from the walking path in general; I haven't seen anyone hit or heard of it, but I could see it happening... please be careful, especially in nicer weather of Spring & Fall
-throwing over a path on 18 (not a big deal because it's so easy to see people from the elevated tee area)
-there's a significant walk from 18's basket back to the parking area and first tee (~3-5 minutes)
-could use better permanent signage
Other Thoughts:
I've only been playing Griffin for about a year, but it's one of my most played courses in that period. Lions might still be the better courses of the two, but I've played Griffin more frequently for several reasons: 1) it doesn't get quite as busy, and 2) there's very little water danger at Griffin. I know I'm not really supposed to compare two courses here, but the fact that Griffin and Lions are so close together is a big asset to both courses. If there's any knock on Griffin, it's that it doesn't have the "intangibles" or "character" that some other OKC area courses have (e.g. Dolese, Lions, Noble). Nevertheless, I think it deserves just as much respect and requires just as much from your game.
To me, one of the biggest things about Griffin is the Red/Gold tee combination. The difference between the two is very significant on most holes, so playing both can feel like two very different (and both sufficiently challenging) rounds. Holes like 4, 6, 7, 11, 15, and 16 use totally different fairways for the two tees. From Gold, they require good distance but also very precise lines. As far as wooded courses go, this is a very good one, not so much for trees crowding fairways, but for tunnels requiring excellent shot execution. Other than a few more open holes (2, 3, 18), the majority require excellent golf shot after excellent golf shot. If you're on, you'll feel like your round was an accomplishment. If you're a little off, things can get out of control pretty quickly, especially from the long tees.
Griffin also benefits from the same Sooner Disc Golf Tender Loving Care that most of the Norman area courses enjoy, especially in recent years. During my last round, I was one of the only ones on the course due to heat, and I was surprised to see a pickup drive onto the course. My first reaction was that someone must be there to steal a basket while the course was quiet. Instead, it was a couple guys emptying trash and fixing a broken bench on hole 7's tee. My experience with this course is that when things get busted, they get fixed. Also, I've heard complaints about litter on Oklahoma courses in the past; but Griffin in particular has been very close to pristine in recent months. Thanks to the local disc golf association and local players for keeping it this nice!
Rating discussion: In short, it's a great course that's well-maintained and requires your best woods game. I might give it a 3.75 if I could, but I have no problem bumping it to a 4. One of Norman's best, and conveniently located close to Lions. It only gets better with repeated plays, so I'd recommend planning to play both Red and Gold tees if you can only visit once. Make sure to check it out if you're in the area!