Hey tiger,
I am also using FS365.
I washed the bike and then dried most of the fairing and then sprayed the FS stuff on the metal bits (which was depressing cause it makes a mess!) then left it!
I was out yesterday on the bike and sprayed it when it i got home, and i have just had the cover off this morning and it seems to be gleaming and clean!
magic!!
Roll on the summer!