Yes, wife and I are considering Belize. There is talk of a ferry operating this spring from Florida to the Yucatan. That way we can take our PU truck without driving through Mexico.
There is no way I’d drive through Mexico! The State Dept has travel warnings for every Mexican state on the route. People I’ve talked to who did drive said they had to have “spare” money for bribes as hauling a trailer is like having a sign that says “INSPECT ME!” They also said that if you stop for the night you have to guard your trailer or it may be empty in the morning. They also said to be sure and drive only during daylight.