A word of caution for those of you whose boat's don't have HINs in the right place.
Several years ago, Mexico inspected all of the foreign vessels at its docs in Ensenada with the objective of confirming the payment of import taxes, for which foreign vessels are typically exempt with a Temporary Import Permit (TIP). A number of boats were impounded when the boat's HIN did not precisely match the HIN on TIP, or because the boat did not have a totally legible HIN easily seen on the transom. For many, it took months to resolve and required the services of Mexican lawyers. Meanwhile, the boats were stuck in port.