Another option would be to get a dock space at Puerto del Rey Marina in Fajardo on Puerto Rico’s east coast.
Your approximately 2-1/2 hours to Culebra and and another 3-4 hours to St Thomas.
They have an excellent yard where you can tie your boat down for the hurricane season.
During Cat 5 hurricane Maria all the boats on the hard survived without damage except for 3 boat which fell down with minimal damage.