FloatersBy: Joseph Wambaugh NEW YORK TIMES BESTSELLSER This is vintage Wambaugh, a rollicking and ribald tale, laced with black humor.The San Diego Union Tribune Harbor cops Fortney and Leeds have a good time patrolling San Diegos Mission Bay, scopingout body sculpted beauties on pleasure craft, rescuing boating bozos whove run aground, and haulingin the occasional floater. But now their days are anything but typical, for theAmericas Cup regattas have come to