Bass in small ponds usually are very aware of what is going on around the perimeter of their environment. Shadows that may be a threat will cause the bass to seek shelter from the danger that they have learned from experience associated with the movement. In other words, pond bass are weary. You should approach a pond with this in mind and make yourself small and blend into the surroundings. Lures should also be presented quietly. Dawn and dusk gives you a good advantage because the light is defused, shadows are gone and the bass feel more secure, becoming active. Pond bass are usually "looking up" for prey, so surface lures or suspended sub surface lures tend to work best. The jointed floating original Rapala in silver/black back is a good pond lure for example.
If the pond has weed beds, then floating worms, soft jerk baits like a fluke, surface frogs like horny toads, small 1/4 oz spinner baits, slip shot plastic worms all work well. Remember if you see a bass, the bass has seen you and is on the alert.
Tom