For dirty luff tubes Stardrops is good as is Swarfega. (Non-grit one)
Not sure with residue left from stickers . Mer (car polish) is pretty good and even gets rid of some of the misting.(with enougfh elbow grease)
I have used Acetone but very sparingly. White spirits and meths work on some too.(Again be carefull though)
Left a sail in our hot tub (on hottest setting with stardrops in water) Sail waas marginally cleaner but house was full of soap suds. (Well gaerden was)
