The guy who lives directly across the street from us, we have gotten to know them because we keep a couple horses there. They have a little pond that has sunfish in it. No other predators. So tons of tiny, business-card sized sunfish, but then some monster sunfish too! I take my 3-weight and a couple cold beers over there and have a lot of fun in the summertime.
I almost forgot why I brought that up. A blue damselfly pattern is about the most successful fly I catch those on. They love it the second it hits the water! Never caught a trout on one, but the sunnies love ’em.