"Which is the flag most cheap
you recomend me ??"
A Florida registration
is a *state* registration
, it is not the same as "flagging". United States Coast Guard documentation
is our national flagging. It is available only to US citizens and corporations owned at least 51% by US citizens, so it is not available to you.
You will find that is the same in most countries. Either you must be a citizen in order to have the vessel flagged, or the vessel must be owned by a domestic corporation in that country. Some countries require the corporation to be owned by citizens, others allow it to be owned by anyone who is willing to pay the expenses of keeping the domestic corporation.
You will find many "flags of convenience" that can be bought that way. Do expect that will also complicate life, as you may need commercial insurance
for the corporation, and different liability status, and different legal
obligations and protections.
Plenty of old threads here and elsewhere about "venue shopping" that way.