Pros:
Very accessible to I-35. This would be a good course to sample while moving between the Twin Cities and Duluth.
Pavilion. Bathrooms in season. Portapotties off-season. Good parking and clean park.
Shot variety all day long.
Multiple layouts, with S/L tees and multiple basket locations.
Excellent signage
Cons:
Harder Park is not single use. There are two ball fields adjacent to the wooded sections, and the extra hole tournament formats actually traverse these fields.
There's some low lying, swampy land in the woods scattered here and there, and you know what all that means in Minnesota, although to be fair, one of the more striking results of climate change so far has been sharp decreases in mosquito populations. Expect flies in season though.
YMMV, but I'm not fond of Prodigy T2's. They're in great shape, but they don't catch so much as they defend the central post.
Other Thoughts:
Leave your shoulder mounted cannons at home. They aren't going to help you one bit here. The keys to Harder are vision, creativity, and the ability to hit one skinny gap after the other. You're throwing through groves at least as often as something so organized as a tunnel. Even the (few) open field holes have well-placed trees to beat.
I encountered the course in 21 hole tournament configuration, which makes use of the adjacent ball fields. I suspect in casual play, you will routinely find it set up as an 18. Bring your Zuca if you want--it's not hilly--but a bag will probably serve you better. The woods are bestubbled with roots, fallen branches and stumps of all sizes.
Regarding that, I suspect that some may find the degree of obstruction to be too much of a good thing. I don't think that this is the case. I witnessed many players above my skill level dissecting the woods artfully and successfully. Personally, I wouldn't want them to change it much, for fear that it would be stripped of its essence. I went home asking myself questions about my own backyard course:
--Why am I pulling out the stumps when I cut a tree?
--Would it add a creative element to leave a fallen tree lying across the fairway a couple hundred feet down?
--Who says that a green really need to be big or even unobstructed?
--How might I use younger trees and undergrowth to force the player to go upwards rather than left or right?
This is the kind of course that gave me all kinds of enjoyment while showing me a long itemized list of all the deficits in my game. Importantly, it's a list one can work on. Many courses are just so long that unless you can't attain that length, there is little opportunity for success. Harder asks you to throw accurately, but not particularly far, making it accessible to juniors, older players. There are short tees available, but accurate throwers of all max ranges will do fine from the longs.
I'll be stopping back here once or twice a year to see how I am coming on that to-do list.