When you don't see fish on the surface, they are usually not eating or nymphing. In my opinion, one of the most neglected aspects of caddis fishing is that people fish too large a Caddis. There are Caddis in sizes 16-20 that come out all the time, but most generic sportsman's stores have them in only larger sizes, such as 12s and 14s. And when the fish see them this big, they immediately know something is not right. Caddis emergers are deadly little flies, and the best working model for me involves a nice tuft of CDC feathers right at the top of the body. Pick up some CDC feathers, get a cheap vise, and some good hooks and tie some of those buggers up.
It is not hard at all, it can be very easy. Don't get suckered into buying 100s of material from a shop, fly fishing can be much cheaper than bait fishing. Ask away if need be.