lol we don't have a hole in the bottom in our snorkles plus we put high raised axle breathers in which some people manage to forget about 
Is there really a hole in the bottom of most landy snorkels? That's just bloody daft, although I know their main use is to reduce the intake of dust. The various breathers are pretty vital - would you really overlook raising them too?
Yeah, its for when people drive down the road and they have the pipe facing forward cause it apparently increases air flow into the engine (which will be minimal, and not even noticeable) so when it rains it comes out of the bottom. and some people just dont think that they might get water in there diffs and hubs :/