My boat's on the hard in Grenada, but you can't get there from here, and I don't think that's going to change anytime soon. Here's a link to US Embassy info for Grenada https://bb.usembassy.gov/covid-information-grenada/, which says:
"There is currently no announced date for continuation of commercial passenger flights to and from the United States, and all travelers coming from the United States to Grenada through other means must submit to COVID testing and quarantine in a Grenadian-government approved facility."
I could fly through another country, but because I'd still be coming from "high risk" US, I'd either have to wear a tracking device (that I have to pay for) for 14 days and have limited movement if I test negative, or quarantine in a Grenadian-approved facility for 14 days if I test positive before I could go to my boat. I'm not willing to do that, so I don't expect to see my boat again until the end of 2021 or the beginning of 2022. The US is the only high risk country listed on Grenada's travel guide: https://bb.usembassy.gov/wp-content/uploads/sites/247/Entering-Grenada-A-Travellers-Guide.pdf
I haven't looked into it recently, but I imagine that US sailors entering Grenadian waters may face similar quarantine requirements. I know that was the rule in the spring and early summer that some cruising friends were facing who were trying to get back to Grenada. They wound up leaving their boat in Guadeloupe.