It is quite a dry climate here in the BVIs compared with Guadeloupe and now, after my two day sail, the decks are all coated with a salt film as you can see from all the flecks of salt on my solar shower that sits on my forward deck.
BTW I have an extra long hose attached to my solar shower so my afternoon routine is to feed the hose through my forward hatch, down below to my head, where the floor lifts up over my shower pan. Then after my shower I refill the solar shower from a water jug. That way I never have to move the solar shower and I refill my water jug every couple of days at the dinghy dock. Easy peasy way to have a daily hot shower.