Sascha runs a 5-day sailing course for sailors of all levels. His standard course is taught on the 40-ft "Ocean Hiker" in Hin Wong Bay and covers all topics related to crewing serious sailing vessels, e.g., setting out, navigation, wind mechanics, knots, map reading, etc. He will also tailor a course if you're merely interested in recreational sailing on skiffs and the like, which he'll do on a modest catboat off Sairee. My advice is to decide what you want to get out of the course, and tell Sascha. He's very accommodating and patient, not to mention an interesting fellow with extraordinary maritime and life experience.