Well around here the best Cutts are the Sea-Run Cutts. They spend a few months every year in the salt water and grow up to 6 pounds. They are readily availible from the beach since the tend to stay in water shallower that 10 ft deep. The South Sound is a great place for SRCs. Smelt, herring, and small attractor baitfish patterns work fine in sizes 8-2. Use clear intermediate sinking lines, but floating can be used with longer leaders (popper fishing is becoming popular too and these use floating lines). 4-7 wts can be used with 6 being the standard. There is a lot of info on SRCs on the net. Here is a great article on SRC fishing in the salt.
http://www.washingtonflyfishing.com/columns/src.htm Also here is a site with great info, links, and flies (check out the poppers for some real fun!)
http://www.pugetsoundflyfishing.com/Home.htm In the late fall a mojority of the SRCs head into the rivers and creeks and you can catch them on attractor dries and spider (soft hackle) wet flies. A favorite is the Reverse Spider.
The SRC is a sea going form of the Coastal Cutthroat Trout. These resident guys are often found in our mountain streams and some rivers and also in alpine lakes, beaver pounds and a few lowland lakes. The usually run 6-10" in creeks and rivers but can get up to 14-16" for some real trophies. In lakes 8-12" is the norm with some pushing the 16" mark depending on where you are. Try fishing the Middle Fork of the Snoqualmie or some alpine lakes and mountain streams/rivers for them. Elk Hair Caddis, Adams, Pheasent Tail Nymphs, Hare's Ears and small Wooly Buggers are great in sizes 14-10. Use beaded and non-beaded flies too.