I agree with small spinners and spoons. But they also take dries, nymphs, and streamers too. Reds and yellows are good colors. But in general, when they are hungry, you'll find them.

Once key for really finding aggressive SRCs on the bite is to fish the next raining day. Cloudy days are OK, but a little rain on the surface really puts them on the prowl for a quick meal. At least in the rivers I fish...