Pros:
Where do you start?
All holes basketed!
Tons of variety including elevation, left, right, long, short, open, technical, multiple par ratings (3,4,5), and those are mixed well throughout this course.
Great flow!
Beautiful oak woodland mixed with larger Douglas-fir.
water hazards in play as well as plenty of trouble for errant shots.
I really am not going to get into the pros (the list could go on and on) any more than to say that if you get a chance to play here take it. This place is mountain style golf that will leave most feeling tired, not bragging about their score, but totally satisfied that they had a great day at a great course.
Cons:
Poisonoak!!!
no concrete or rubber tees (it is private property so i totally understand)
It will be a long round so make a day of being there (not a con)
The hike will take it out of you so bring extra water because you will not be back to where you park for extended time.
Grass can be tall and lead to lost discs. Because this course is not played by public on a normal basis, if Caleb hasn't mowed it can be tall. The course has always been in great shape for tournament play.
If you haven't been here before it can be tough to navigate some places in between holes or even see the basket because there are no signs. (you would likely be playing with Caleb I am guessing so it wouldn't be an issue)
Other Thoughts:
If you get a chance to play this course definitely do! It is a top notch design, and provides plenty of challenge. The designer is a great guy and has done a lot for Humboldt county disc golf.
Because this course is private my rating is going to be a little different than normal. I think that in terms of course potential, and actual design I would give it a 5. However because it lacks tees (pretty big deal) and signage (not as big a deal) I would have to deduct a point even though I don't want to in this case.