yeah - except that having liquid soap smeared all over your hulls during a 1200 mile trip will attract every piece of dirt, dust, and debris to your hulls. I can only imagine what they would look like when you finally arrive. Leave it on long enough (i.e. the trip home and leave the boat stored) and the liquid soap, while still water soluble, turns to a thick glue like substance. We build machinery in production plants that run soap and dried liquid soap is a major problem with moving components.