Florida Statute, Title IX, Chapter 55 covers foreign judgments. A copy of same can be found at:
http://www.leg.state.fl.us/Statutes/index.cfm?App_mode=Display_Statute&URL=Ch0055/ch0055.htm
Though some states specifically defer acceptance of default judgments, in reviewing the Statute, Florida does not exclude them specifically. However, Florida statute does allow the debtor to contest the validity of the (default) judgment.
"55.509 Stay of enforcement of foreign judgment.--
(1) If, within 30 days after the date the foreign judgment is recorded, the judgment debtor files an action contesting the jurisdiction of the court which entered the foreign judgment or the validity of the foreign judgment and records a lis pendens directed toward the foreign judgment, the court shall stay enforcement of the foreign judgment and the judgment lien upon the filing of the action by the judgment
debtor."
In order to understand this sections impact, you need to understand that default judgments are considered 'weak' judgments and are susceptable to the following challenges:
1) Service: The debtor can claim that he was not served properly, not in the correct capacity, or not in his/her correct legal entity (name). If any of these are correct, the judgment can be voided.
2) Jurisdiction: The debtor can claim that the legal action took place out of the correct jurisdiction and he was not aware of the lawsuit.
3) Appearance: The debtor can claim that he contacted the court before scheduled appearance and had arranged a reset of the date; extenuating circumstances, etc. (anything to challenge the valididity of the judgment).
4) Constitutional issues: The debtor can claim that due to any of the above reasons (if valid), he was denied his constitutional right to defend himself due to his 'non-appearance'. This can also void the judgment.
And, since Small Claims court (where most of these judgments originate) do not have court transcripts, it can be fairly easy for a debtor to make claims about the 'foreign' judgment and prevent it being 'domesticated' to his home state.
However, NONE of these claims can be made if the judgment was rendered after a 'finding of fact' by a court after hearing both sides evidence. That is why a default judgment is considered a 'weak judgment'.