Shame you weren't there last week - they had the "World" Championships in Key West last week and they were great!
OffshoreOnly.com has a lot of offshore performance info on it or get in touvh with the Florida Powerboat Club, they have a website with info on it as well.
There is the Miami Boat Show in February which is worth going to as well - lots of gofast offshore stuff there too!
............ hope the above helps,