Well, I guess 6 is the definate max... And that's assuming they don't ever sleep like someone said before. I like skinny chicks anyways!

My Scarab 21' had a person rating of 8 people... and that was about 6"-8" less cabin space that the 27 Fever. So, I'm sure if there WAS a rating it would probably be far higher than what is possible to actuallly carry responsibly.

I put 12 on a 27 Fever one day, mostly girls but DAMN, I had to put the 3 guys up in the cabin and a couple of the girls in the cabin to plane off. I was so worried the drive was going to break planing off. If it is mostly skinny girls 8 would be my limit now. To make you laugh we put 34 on a 36 St Tropez cruiser once, chit I was worried it was going to topple over.

USCG regulations state that boats over 20' do not require a placard. Some builders put them on some don't. There is a formula: (length x beam / 15) It is way more that what you could ever safely carry on a performance boat. As long as you have enough life jackets for everyone on board load her up and have fun.