Yeah, it's the same for swimming or sailing. If a port captain in France ask you 'are you sure?' or do off hand remarks about your skills he isn't being polite.

Yeah, it's the same for swimming or sailing. If a port captain in France ask you 'are you sure?' or do off hand remarks about your skills he isn't being polite. You really to be sure about your path and your skills. If the beach have a red flag, you better know the area and the tides