Just out of interest I did an Orlando to New York flight in a cessna 172 as my qualifier. Took approx 9.5 hours each way with 2 full stops along the way for re-fuelling.....obviously I stayed overnight in New Jersey.
However I didnt and still dont have any piece of paper signed off by anyone.
Do the CAA look for this when you submit your application for your CPL licence ?
Cheers..
T.