I made my first trip this season to the Squish yesterday. Like you it took me some fiddling to 'dial it in' to start getting consistent fair hookups.
A few comments. When looking at water clarity few think of it from the fishes perspective. In clear water light goes into the water and is largely absorbed at the bottom. The water is clear but beyond a certain limited depth looks dark little or no light is reflected back to our eyes, what light that is reflected are the dark spectrum such as blue and green. When we look into turbid (murky) water the particles that make it turbid reflect lots of the light back to our eyes and we see primarily the light grey or brown of the particles and little else. Fish looking up see something different and available light is far more important in what they see. That means what we see exaggerates the apparent lack of of visibility. I don't know to what extent but fish will see objects such as lures and flies at a greater distance than we might think, but particularly if it is in a size or colour that will stand out among the particles in the water. Fish will see it above them against the background of well light shroud of turbid particles. That's why black, dark blue and bright florescent and UV colours work better in such water than drabber colours in smaller presentations. So to sum up, even when the visibility looks all but nil to us it may be quite a bit better for the fish and still possible to catch fish successfully.
I do believe that coloured water or clear, snagging is primarily because the fly, bait or lure is fished too deep. Salmonid feeding response is mostly oriented to what is just above them. If the fly is at the level of the fish or below the probability is high it will contact the fish and snag before the fish can react to it as a food item. The fly needs to be above the fish and how close it needs to be varies with water clarity.
Pinks are great biters and they love to chase. often for quite a distance. They will snap at flies or lures without grabbing them. Over many years I've been able to watch pinks react to my flies but off the beaches as well as in clear rivers. I've found that it's best to present flies above a group of pinks. This can be directly in front and over of the school (best), to the sides or directly over. Run your flies through the school and it's likely to snag a fish. Run a dark sink tip towards a school and they will part to either side of it and disregard the fly.
FWIW the folks that fish a float and a bit of wool or corky were doing very well yesterday with few snagged fish. A short float presentation is one of the easiest ways to to consistently make a presentation just above a fish. For me what works was a type 3 tip, about 3 feet of leader and an unweighted pink fly with a larger profile than I'd normally use. Most of the strikes came at the end of the swing or on the hang down. I also watched a couple of guys who did well with floating lines & weighted flies hung a few feet pretty much directly below them in water that was knee deep or less. That's a smart way to fish in those conditions.
I hope these observations are useful.