Dave,
I'm not necessarily looking for any magic bullet to make huge fat smallies. I am of the school of thought that a solid and diverse food chain where you make the most use out of all of the resources in your pond is the best choice.
So, if they will persist in the pond and grow to a size where the smallies will eat them and get a belly full then they are doing their part. They are especially doing their part if they are eating snails or other crap in the pond and turning that into bass food.
