I made a day trip up to Gold this past week. The weather was great and the fish were active. Fish were rising most of the day to tiny mayflies. While I never cracked the code for the surface feeders, I did catch plenty of fish on an intermediate sinking line and damsel imitations.
I did catch fish on a small Parachute Adams and other anglers were having success on midge patterns. Be sure to bring your mosquito repellent as the bugs are a bit brutal in the campground.
My best flies were: