here's a rules question regarding obstructions. You are on port tack. There is a boat just to leeward, say -- three feet -- and you are bow to bow. He is pointing higher than you for whatever reason and the only way to keep clear of him is to tack or luff and let him pass ahead of you. But you have a boat on your hip and you can't tack without hitting him. Can you demand room to tack? Do you have to just let him go?