Pros:
The Iron Hill course is pretty, wooded, and can be quite peaceful, it appears, if groups spread out and don't crowd one another. I arrived the same time of a 3-some with much better skills than me. They started on no. 1. I walked down the asphalt path to no. 10, listening and watching to insure I wasn't walking into the path of a hot disc in flight. Judging from the number of cars in the parking lot, I didn't think this would be an issue, and it was not. While not the traditional way to encounter a no. 10 from course central (you walk mid-fairway back to the tees), it turned out okay. You won't be able to do this if the course is busy, but you can if the players are sparse.
Course central is a largish grove of woods with two practice baskets. In addition to practicing your putting, you can practice your approach here. Which is great, since one starts off a round with a drive. Not a putt... So throwing with some power loosens up those muscles. Most courses don't have such a large warmup area, so this one is definitely welcome.
The terrain is hilly (up and down), rocky, and the track is long. That means no one will be running around the course, playing rapid disc golf. For those of us who like to take our full 30 seconds before throwing and actually contemplate our strategy, this keeps the faster players at bay to some degree.
If you are in greater Newark, the course is a piece of cake to get to. Centrally located (close to I-95) yet out in suburbia/exburbia in quite a tranquil setting.
Though it's definitely more woods than open (only the nos. 3 and 4 middle fairways are open), I think the wooded fairways are largely fair. And you start with some of the wider ones before things get pretty narrow at nos. 8 and 9 and again at nos. 12-13. Slower and smooth throws. Maybe you will mostly stay out of trouble. Many fairways vary in width with wider sections you can land in if you can get the distance. This is very fair, and cuts one a break on occasion.
Cons:
There could be a few more benches. I think the ones that exist are at the long tee, which makes the best sense on a wooded course where there isn't a ton of open space in the first place.
Some of the short tees only have rocks or just one painted rock marking them. Would be nice for us short throwers to have a real pad also.
I think there are no real restrooms, but there is a large porta-potty at the top of the most-inward parking lot. Something is better than nothing.
With all the shade, some spots get muddy after a rain and stay that way for an extended amount of time. But this is not the case all over, so the place is not a bog like many flat courses with poor drainage. Not at all. You are traversing hills after all, so the run-off is pretty good.
No. 8 is really hard because it is so steep. IMHO I think it should be a par 4 from the middle tee to the short basket, if it isn't.
I don't think any of the current hole signs include the truly short tee if there are 3 tees. I found 3 tees at nos. 1, 3, 5, and 8. If these are not going to be removed at some point, they need to be accounted for in the signage. Perhaps the pars for all 3 pads and 2 baskets would thereafter need to be adjusted.
Other Thoughts:
I played the short or middle tee to the short basket, whether said was the gold or silver basket. They vary per hole, though it seems the silver are short on the F9 and there is more of a mixture on the B9 (yellow sometimes short; silver sometimes short).
I suspect the truly short pad (when there are 3 tees) was the original solo pad, before there were multiple tees. If you are truly trying to play from the shortest pads, remember what is on the hole sign as the short pad is actually the middle pad and walk ahead a bit. All of them are on the edge of the fairway, one side or the other. And if you play the middle tees by error, they are not at all onerous (fellow short throwers). I played them on nos. 3, 5, and 8 and survived. Even threw in a miraculous and long spin putt on no. 8.
With its reputation, I came to Iron Hill expecting to be chewed up and spit out like yesterday's spoiled meat. While I certainly did not set the world afire (I never do), I didn't do worse than I have on many other very challenging courses. And that is very encouraging. Now, maybe that isn't the case playing long-to-long, but I think what the course forces one to do is truly play to your ability. If you really cannot handle the course with some decent skill from the long tee, move up. There is no shame in that. I expect I will be on the short/middle tees for a really long time, if not always. Maybe if I ever get a decent game, I play to the long basket from the short/middle tee. I believe that is all I need to try to aspire to here.
Finally, because of the goodly amount of walking you will be doing, this is not a 2-hour round course. Expect to be here 3 hours and have nothing crucial immediately planned afterwards. It might not be so stupid to pack a few snacks and take a break from all the walking, possibly at the picnic table at no. 14. Though you are 2/3's done by then (if you play 1-18 in order), you're going to be walking back uphill in a bit, and no. 17 is a monster. I would not play another course on the same day I play Iron Hill unless the other course is some flat, open 9-holer. Is there such in Newark? I was pretty pooped when I was done and needed to sit down on a boulder before walking up the fire road and back to the parking lot. I had dropped a towel on 16 (played 10-18, then 1-9) and walked backwards from 18 to find it after finishing no. 9. I didn't really know where it fell out of my bag, but guessed probably the 14-18 stretch. And I was right.
I think Iron Hill is a reasonable if intense, rugged course. Your first time here, come with humility and play less-challenging pads. I think you will enjoy it more that way. As you learn this course better (like anywhere else), you can move back to the longer pad or play to the longer basket.