I grew up in Pittsburgh, PA just a short distance from where they are made and I love Joe's flies. I have had success at Hagg with them (although I rarely fish Hagg lake). If I am fishing from shore and the fish are near the top of the water column my favorite technique is a heavy wooden bobber with a Joe's fly down about 4 feet (and sometimes a split shot). I have used this rig over 30 years. In streams I forgo the bobber and just fish the lure either with or without a split shot depending upon the water depth. (Obviously you can not cast far without any weight, but they are deadly in small streams fished weightlessly).
I like a variety of colors including black, greenish brown and yellow. I also tend to fish the silver blades instead of the gold blades.
I forgot to mention one other technique we used to use in lake fishing with these. (Although I have not used this in Oregon for some reason). We would take the hooks off of a spoon (like a red and white daredevil) and then use the spoon like a flasher. We would typically have about 3 feet of leader from the spoon to the spinner. Also wanted to mention that I have only ever used to classic weightless spinner. I am not familiar with any of the newer ones.
Good luck!