I really like your site and sympathize with you living in sunny Greece and your comments on what they think they are looking for. I live in Puerto Vallarta, Mx approx 10 months out of the year and
run into some of your same problems. If it is any help to you, I tell them.... think of it this way,
(when we are planning the site) . Mr. and Mrs. Coldweather sitting in cold bicycle seat, USA are planning their Holiday to sunny Mexico. They want to be seduced with your product. Your front page should make them want to be on that Yacht, Right Now!
IMO, I would make the picture of the boat bigger and more inviting on the front. Then, of course, many, many, pictures of the activities you can do while aboard and land. Perhaps a picture show....
Just a thought.
Good luck, perhaps I will get to Greece, Next summer!

Goldpaw.mx

http://www.pvwebsolutions.com