My opinion on gobies. If your fishing anyplace with the slightest current you don't catch gobies. I could be full of it(it won't be the first time) but after perch fishing in Erie and catching them(no current), and then later in the year fishing closer to the Detroit river(current) and not catching them, that's the only thing I can figure out. Also fishing for smallmouths in Little Traverse Bay with no current, and catching them again.