I'm a little heavy for it at 205#, but it still floats me just fine down anything I want.  It doesn't swivel very good however, which is really the only thing I wish was different about the boat.  

I tried the Java over the summer, and while it did turn *much* easier, the initial instability of it was hard for me to get used to.  In all fairness the Java is a true creeker that doesn't do normal downriver runs all that great, so I was trying to drive a sports car down a dirt road, so to speak.