GBZ as far as I can tell, with the honourable exception of Whenurhappy, no one else posting in a dismissive, derisory manner has ever been on a boat, don't presume that shouting loudly is enough these days to reassure Joe Public that all is well with the deterrent. None of the posts have disputed the young mans claims. That is a concern.
Tourist your comment is noted. You are on my ignore list from now on.