A bottle of cheap brandy heavily laced with senacot, in an obvious place in the galley, won't stop thefts but may give a certain feeling of satisfaction later.
Daily Mail mobilises its seahorse-loving readership; http://www.dailymail.co.uk/news/article-2933971/Campaigners-condemn-decision-scupper-seahorse-refuge-yachtsmen-moor-boats-exclusive-resort.html
Two nonos; do not powerwash and do not scrub. Use soft cloth. My method is three step. Firstly wash deck with soapy hot water and rinse with clean (not salt) water. Then repeat with dishwasher solution. Third wash again with oxalic acid 6% solution and rinse with bucket after bucket of fresh...
Here goes. First post as a new member so please be gentle. A brief recollection on what makes a bad skipper. With wife and friends we chartered an Atlantic 49 out of Lefkas. First thing the (American) skipper confirmed to us that all drinks aboard were included in the price. Cheers all round...