My crew and I weigh in at over 400 lbs and have been racing a NACRA 6.0NA for the last year. I am very pleased with the boat, it is very well built and durable. Performance wise, it is a big step up from the P-16 and with that comes some trade offs. On the plus side you have speed, pointing ability, lots of hull volume, resistance to pitch poling, and reasonable pricing. On the downside, it is a powerfull but well behaved boat. Adding a furling jib could be a solution-it will sail well on the main alone. Another point is it a very busy boat with lots of control lines, but this could be cleaned up by replacing the jib lead system with a cleaner set up if you are not racing. Having dagger boards is another task, but they are well worth it unless you sail on very shallow water. I have had 3 200lb guys on the boat and it still moves! Even though a used 6.0 will cost twice that of a H-18, it is worth it(I owned an 18 for years) P-19s are also nice and can be picked up very inexpensive ($2000) but are much more fragile. You may also find some very good deals on a NACRA 5.8 (19ft) as they have been around quite a while. Good luck with your search-boat shopping is one of the best pleasures in life.