Welcome to cruisers forum. I had lunch at the Rodney Bay Yacht Club this past February. My wife and I like
St Lucia just fine.
Not sure of the best way to get a boat from Michigan all the way there in one piece. I would be more worried about it being suited for such a long hard journey since you have not used it much as yet. It's a long trip no matter how you do it unless you take off the
mast and put it in a container and ship it.
To get it home you'll need as noted personal papers and
documentation to prove
ownership. This will be the key problem you need to deal with. You won't require a Visa but will require a passport. You'll also need to deal with importing a boat into
St Lucia (assuming you are a St Lucian) and I can't say what that process would be. The US won't have a problem with you leaving with it however the trip may take you longer than you might expect given the
weather in Michigan and
hurricane season it leaves a narrow slot to go a very long ways. It's about 2000 nm to
New York to St Lucia and almost 1000 more from Michigan to
New York. The alternative is out Chicago down the Illinois River to the
Ohio and Tenn Tom Waterway to the
Gulf of Mexico for the last 1700 nm home. In any event you will need a decent
engine and
fuel capacity to do a large number of those miles.