I do not think Diamond is a great panfish lake although I could be mistaken. We did not catch any of any kind although did not fish specifically for them. Very small lake just kept going round and round. Bass most everywhere. Pike in the end away from the cut to Squirrel but no big ones. Enjoyable lake to fish. No water skiiers during morning and evening fishing hours. Idle speed only between 10am and 6pm If I remember right. I would go back although have been going further north to Presque Isle chain.
Good luck. Seminole Jack