Rule 1: Starboard Tack has Right of Way
Rule 2: Rules of the road apply
Rule 3: No hitting one-another(With or without boats)
Rule 4: Take all marks to PORT unless noted on Race Course
Rule 5: No hitting one-another
Rule 6: Bribing the committee is against the rules (while anybody is looking)
Rule 7: No hitting one-another
Rule 8: There is no rule number 8
Rule 9: No hitting one-another
Rule 10: Follow all the rules
Rule 11: No hitting one-another
Rule 12: Never make a duck change its course (Dodge the Duck)

Registration procedure: Sail by the committee boat before the start. Tell them your boat name and sail number. Be sure they acknowledge you. That's it!

There are no customs unless you go really way off course.