...also...
in such a situation, if I didn't have a good read on what was hatching (based on observation, water temp, season, time of day, etc) I would put on a streamer (a muddler minnow, clouser, beaded wooly bugger, leech pattern) and fish it near structure or cast it out far with some split shot over it, give it some time to get down, then slowly strip it back in. In addition to these searching practices, suspending a generic nymph (a prince or hare's ear) in the water column has often helped me out in lakes/ponds. As the weather gets colder, look to chironomid nymph patterns. They are absolutely deadly in the late fall and winter months.
tight lines...