WW,
I'm all in on experimenting with the goby. Of course once they are loose in the great lakes who knows if they do more harm or more good. But in the confines of your pond (assuming you can confine them there) they would be an interesting addition both to see if they help balance the pond or if their young will provide forage opportunities.
I can't believe how much the bass have adapted to eating them. I know when we fish the rivers that feed into lake Michigan, if we catch small gobies and use them as bait you have never seen such a magnet for big bass! Even better than using a live blue gill.
Of course with goby you are also accepting all the unknowns that come with them as we really don't have a good grasp on their life cycle, eating habits, any parasites they might bring with them etc.
