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 10 passenger pontoons have a max weight capacity of 1410 lbs. If you reach 1410 lbs with only 8 of your guests, then the max capacity you can have is 8. If you have 10 people already on board and you are still not at 1410lbs, that does not mean you can have 11. 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.