Did my van in December,just rub the old paintwork over with the scourer thing that comes in pack (well it does in kit I got anyway) just to take the shine off the paint,then roller it on,leave it for so many hours(says in instructions) then give it another coat.It does smell,but its not anything more than most paints smell,keep stirring aswell so rubber bits do not settle to bottom of tin,oh and just sort of dorb it on rather than trying to paint as you would with normal paint.Would not of thought you would of needed to do it though with trolley and containers,should not be much water sloshing about