: Long enough that it's hard to remember. 6 weeks after last epoxy --
: maybe more. 2+ weeks after paint, to first use.

Shouldn't have stained the paint then. It is though average anymore to have a ring around the boat after paddling, lots of junk in the water in many paddling places.

I use FP 303 or it's equal to clean with, a little bit goes a long way. Most of the UV treatments will make the junk in the water stick less too.

Bill H.