It's all about the frequency and size of the waves that the hull shapes are designed for. In my opinion, the N20 will hobby horse and slap badly in smaller shorter waves in lighter conditions where the 6.0 will slice right through. The 6.0 is a much better boat in moderate air with choppy water. However, put the N20 in some two footers with breeze and it will sizzle through/over them. In really heavy stuff, it will survive better than the 6.0.
Agree on all that, but I've not found the hobby horsing of the N-20 objectionable at all compared to the 6.0. You do get more slap than the 6.0. I really love the feel of the 6.0 when it's in power-on cut through chop mode. But I love even more the feeling of the N-20 in the heavy stuff - you get away with things the 6.0 will chew your butt off for... More than a few times I've had the thought of "that would've been a pitch on the 6.0", and to me the 6.0 didn't pitch that easy. My only wish for the N-20 would be a little more freeboard so the rear beam doesn't get caught by waves as easy.
But I can see also a bit more now that the rocker on big boats may not be as extreme as I once thought given the length of the boats and sea states.
