If he is on the orange line, Mine hunting squadron HM-15 or HM-14 will see him. They have all kinds of groovy instrumentation in those birds, and are here in Key West for exercises...
I just spoke to a friend in the USCG R&D Center, where the SAROPS models are developed and used.
He suggested this site: EDS Viewer. This is the data the USCG uses, and probably the Mexican CG too; the Mexicans also have the SAROPS model, but not the latest version.
For example:
View attachment 510473
and this time series for the location of the circle west of Cozumel:
View attachment 510474
Does anybody know if the US Coast Guard and Military have been alerted to the situation so they will be looking?