Starbrite hull cleaner. Stuff is strong. Use the consentrate in a pump spray bottle and watch the scum run off the boat. If you have to wipe any scum left, just comes off effortlessly. Can mix with water to dilute and still works OK but I use it full strngth and most of the time don't have to wipe. It is some strong smelling stuff. Not so much as stinking but will take your breath away if you get a good wiff so use in a well vented area. CF
The Original Woodsgoat Hater
2011 NWR Bash Yellow Perch Champion