Time Bandit has been lying in Portishead Marina for a few days now and having left her there for a week once before I know that as I dont have antifoul on the hull it will have started to get a covered in little spots of foul (Feels slightly rough when you run your hand over the gelcoat).
Last time I just used a sponge with a scouring pad on one side to remove it but it was a realy ballache lying on my back under the trailer.
What is the best stuff for cleaning of this foul with minimum elbow grease