Depends... 300lb adults? Or 150lb adults?

You carry about 850lbs of fuel and 120lbs of fresh water. Depending on the range of your cruise you could shave some weight off with 1/2 full tanks. Also remove any unneeded crap from the boat. You'd be surprised how much all that "needed" stuff weighs.
Trim tabs all the way down from the get go. Give it some time, but I think you'll get on plane. Max i've had is 13 people on my v298, but this was 6 adults and 7 kids. Average adult weight was about 190lbs and the average kid weight was 80lbs. So, 1140lbs of adults and 560lbs of kids for a total of 1700lbs. Make sure you put the "fatties" as far forward as possible!
