We were up 8/26 - 8/30. Very slow for us on walleye and that was all we fished. Not on the reefs like we are used to this time of year. Based on the COs that stopped us it sounds like it has been slow most of the summer up there. Hopefully things are getting better with this fall weather. Best luck for us, not that it's saying much, was on bottom bouncers with a floater and crawler rig. Jigs produced almost nothing, same for jigging/rippin raps.
Hope you have a better trip than we did!