NO! Each boat is Coast Guard rated for a certain amount of people AND a certain weight capacity. Neither can go over. For instance, our 8 passenger pontoons have a max weight capacity of 1400 lbs. If you reach 1400 lbs with only 7 of your guests, then the max capacity you can have is 7. If you have 8 people already on board and you are still not at 1400lbs, that does not mean you can have 9. The max is EITHER the max number of people or the max weight, whichever comes first. Please call us if you have concerns about this question as overloading the boat with weight can create a dangerous situation. This includes children. 8 people TOTAL, no exceptions.