The Tyee Farms course is built on the property adjoining the small grocery store. The lady in the store is wonderful and very welcoming. She asks that you sign a simple hand written waiver before playing the course. She stated it was for liability purposes if you fall, I believe it's in case you get sucked into the boggy mud never to be seen again. Maybe discovered 1,000,000 years from now, like a woolly disc golf playing mammoth.
I see this course as maybe a two season course, that is, summer and uh, late spring and early fall. I played it mid-November and it was too wet and boggy for me to consider it playable. Much of the course slopes down to a ravine which has a small stream of water running through it, the area around this stream is extremely wet and muddy.
The course definitely has some tight, challenging holes. I give it a 3.0 for it's enjoyment level and challenge. Unfortunately, there are too many other problems here which I cannot ignore.

The 13 hole course starts right behind the store. The tee pads are natural and not in too bad of shape, other than the # 5 pad which was under water. The signs are small, metal which appear to be homemade. They're quite nice and show you the preferred route, distance, hole # and they show the next tee. They all have clever little names for the hole. There is a nice variety of distance here ranging from 125' up to # 2's 405'. The course has this folksy feel, especially on the first hole which plays behind a building and features some lawn art including a metal piece that resembles a large bomb.

There were a couple of interesting, tight, challenging holes. I liked # 7 which features a very tight line throwing across a deep gully to a hidden basket that's either 215' or 275' away, depending on which tee sign you're paying attention too. There were rustic rounds of logs on the ground, with the information apparently written by sharpie. Then # 8 came back with another tight line to hit. It's 237' over the gully and small stream to a white basket that looks like it came from the Lake Stevens course. The rest of the baskets were new Mach II's, except for the 2-3 missing baskets. I don't know what they are or where they're currently residing. # 9 would be a fun little throw. It's 234' down hill and fairly tight. Unfortunately, that is one of the holes with a missing basket. I didn't really locate the # 10 basket. I believe it to be missing also.
The final hole, # 13, is a 300' hole which requires probably a 175' carry over the pond. The issue here is, the far side of the pond has trees and some sort of performance stage which could easily knock your disc into the pond.

Because I was being complacent and lazy, I didn't bother to walk ahead and locate the basket on # 3. I wrongly assumed that the basket would be far left when it was really mostly straight ahead. I compounded my mistake with a poor throw which went AWOL down the hill. Down this hill is a deep, I mean sucking your boot off deep, bog. Luckily, I escaped with both my disc and my boots but I think I left much of my pride down there as I was rolling around in the mud. I wouldn't consider playing this course again until later in spring, April/May.

I have to wonder how a almost brand new course is already missing three baskets?

There is potential here. There are some challenging throws to be made here. There is some fun golf to be played here. My advice would be, wait until it dries and play in a group with spotters.