Fifteen-year-old Caitlin McKay’s parents have taken the family to the British Virgin Islands. For a year. To live on a sailboat! Life as a live-aboard isn’t exactly the floating “Laguna Beach” Caitlin had hoped for, however. She’s sharing a tiny cabin with her five-year-old brother. (Careful, folks, he’s a biter!) Her new school is girls-only and full of glitzy British ex-pats. Island Time, the sailboat her parents bought—sight unseen—from navigationally-impaired cigar smugglers, looks like the opening shot from an episode of “I Shouldn’t Be Alive.” And, as anyone who’s ever tried to work up a good lather in salt water can tell you, bathing in the ocean isn’t nearly as romantic as it sounds in pop songs.
But, for the first time in her life, Caitlin is learning what it’s like to have people (plural!) actually like her. And not just because of the “interesting stuff” she found hidden beneath the Island Time’s splintery floorboards, either. No one who meets the New Caitlin would ever believe that, back home, she was just that freaky, scrawny girl who skipped third grade. Even Tristan, the hottest guy on the island, is beguiled by her easygoing air and artfully padded bikini top. She just can’t help wondering, though, if the New Caitlin and the real Caitlin have anything in common. And when the Island Time’s former owners come looking for the contraband they left behind, she wonders if she’ll ever get the chance to find out.
This is a great idea. It's a lousy hook. You've got a very bouncy energetic style and it's bogged down in too many words and long ass sentences. And "careful folks he's a biter" is clever but it's evocative of a ringmaster at a circus, not an omniscient pov. Try writing this info in first person to see if it helps. Then "translate" to third. This is a fun idea.