Rejex worked great this spring! Easy on & off, do a search on here for rejex&permanon mix looked like impressive results. Trying that this spring to compare to just plain rejex.

You won't find it locally (unless you are in alexandria bay, ny) but the best stuff I have used is:
http://www.power1one.com/Fountain_of..._-_Vitreo.html

All the other products work well also, although I am not a huge fan of the vinyl treatment. 3m on my vinyl.

I've used their power1one hull cleaner and it worked great. Just put some in a sprayer and spray on, rinse off with water.