Bought a 41' Morgan in Ft Myers and, because I took it out of state (to
Louisiana) it has been de-registered from US database.

I am English and want to go to Cuba (amongst other places in the
Caribbean) so thought of registering the boat in UK, even tho I live
permanently in NOLA to avoid the hooha by US Homeland Security etc.

Does anyone have any thoughts on a downside to this idea?

It's a small matter, but now is the time to decide one way or t' other.

Molesworth