I have waxed mine on my knees in the past. But now I go to the dollar store and buy two or three of the sponge mops with the cheap metal handles. So I can do it standing up. I use Protect-all . Spray the wax on roof and spread it with the sponge mop. I don't bother to go back and wipe it off. Works for me.
2001 Sea View 31' F53 1 slide 8310 133,000+mi
2012 Jeep Liberty Smi stay and play Duo brake system
Security by Bentley, KF6HCH, God Bless