Launch depends on where you want to fish but the most centrally located launch is the Harley-Ensign launch at the mouth of the Clinton river. This launch is kind of the main hub and has 16 in/out lanes with a ton of parking so you will pretty much never have to wait to do anything. I pretty much always launch here. Channels will definately have fish that time of year. Anchor bay always has some fish but in september you might do better south of point huron in the metro beach/300 club areas. Crocker road launch would put you closest to that water but its not too long a run from Harley assuming the lake is not rough.