I was on one of the docks and the little guys were jumping and flashing all over. Diversey is tradionally a good harbor to fish for bass and northerns and panfish due to the established weedbeds that are in there. I think where you were and along the eastern wall are good spots to try. The only problem is the boat traffic is going to increase dramatically and it makes the fish skittish. I plan on hitting Diversey a lot more this summer due to my lack of success at Montrose over the past year.
Lets keep trying and posting results.