Pros:
Interesting 9 tee/18 basket course in a rural county park outside of Milwaukee, WI. I don't know if I've ever played a setup like this - each tee is signed with two baskets apiece to be played as a different hole (for example: holes 1 and 10 play from the same tee, but the baskets are located in different spots), which makes for some interesting golf to be packed into a relatively small area.
The basics are all done very well - well-mounted Mach III's in superb condition, informative tee signage, and as of November of 2017, new concrete tees have been poured; they are excellent and quite spacious. Cool little bag holders at each tee, too.
I was a little skeptical of the 2 baskets per tee setup, but once you got back into the more woodsy part of the course, it used elevation and trees quite well to lay out holes you had to execute different shots for, and thus, left you feeling like you weren't simply playing a longer or shorter version of the exact same hole a second time when you cycled through the tees again. Also, a small touch, but one I appreciated: on your first run through the 9 tees, the course designers did a good job alternating if you were playing the longer or shorter basket - you aren't playing all the shorter holes 1-9 and all the longer holes 10-18.
Free to play (there is a donation box if you feel compelled to donate), and being so out of the way, I can't imagine it ever being too crowded.
Cons:
No major cons, but some nits to pick here:
The 9 tee / 18 basket setup was interesting, and a nice way to pack 18 holes of disc golf into a 9 hole space, but the setup does have its inherent limitations. As I mentioned in the pros, the course designer utilized some creativity to make the second basket per tee feel like a different hole most of the time, but there were a few wide open holes early in the layout that it did just feel like different length versions of the same hole the second time you played through.
Course did feel significantly RHBH heavy overall - I can really only remember one tee that clearly favored an RHFH shot, most clearly favored RHBH. It wasn't a major problem, but a little more balance would have been nice.
There also was a small pond on site near the last few tees too - my guess is that it probably wasn't viable to integrate into the course due to the other uses of the park, but you could have made a set of sweet water carry holes over it, and I left feeling like that was a missed opportunity.
Other Thoughts:
Carlin Weld is a course I'm glad I got to play - it's an interesting setup, it's something different, and the just felt elegant - the course maintenance was on point, and you had some cool features like an elevated basket on a rock mound (hole 1) and the steps going down the hill of 3/12 were a nice touch.
I won't put this in the "cons" section, because I really have nobody to blame but myself for this, but be sure to get a look at the course map before you set out, and pay attention to the tee signs, because that's the only "next tee" indication you're going to get. If you just try to wing the navigation on your own like I did the first time through, there are a few spots that it's not at all difficult to get lost or sidetracked to the wrong tee.
C/W has a few walking trails on site, but nothing that you should have to worry about unless you uncork a completely errant shot. One thing to consider: Those first couple of open holes are surrounded by long prairie grass with prickly branches interspersed throughout it - I had a tough time finding my disc in it following a bad shot in November after it had all kind of gotten flattened by the weather - I would NOT want to have to sift through that stuff looking for a disc in the summer!
This course is a little out there in the boonies, so I don't know how often I'll be able to play it, but this is a fine little course to make a stop at and play if you find yourself around the area, or if you want to spend some time here, you could do far worse than to play each set of tees four times (which I did) & each basket twice. You have to go fairly far (probably to Milwaukee, Madison, or the Silver Lake Fox courses) to find a clearly superior course.