My numeric rating for this course should really be broken out into a "rating for pros" and a "rating for ams" score.
Alex Clark is on my mental short list of "best courses in the country for novice players." -- I'd probably give this place a 4 or a 4.5 for novice players, families, kids, etc... - the short, flat course is challenging for that level, very pretty and will improve your game and your shot selection.
However, for Adv/Pro players, this is probably a 2.5 or a 3-rated course, tops. It's fun and a nice diversion, a decent place to practice putter drives and putts, but lacks much real challenge, even from the longs (if you can find them).
The locals here are a mix -- some die-hard disc golfers (mostly Masters and AM2/3 players) who are always welcoming and good company, interspersed with lots of young kids who may or may not know disc golf etiquette.
The prevalence of young kids and other inexperienced players should make anyone feel less intimidated by the sport. Again, a great reason for this course to be played by folks who are new to the sport, or for experienced players to take friends who have never played -- Alex Clark will be a place to get them hooked.
Random note: I haven't played here very often, but of the 18 aces I've hit, I have more aces here (four) than at any other course. A hammered 8X KC Banshee on hole 2, a backhand CE Eagle up a headwind on hole 4, a backhand original San Marino Roc on hole 12 and a forehand DX Firebird on hole 17. Also, more chains than I can count on various other holes. This is a great place to work on your ace count or to get a first-ace if that's one of your goals.