For a noserider my opinion is that you want:
- thin, low volume rails, especially in the nose, 50/50 or classic depending on your tastes.
- low front rocker
- semi-pointed nose outline for fast waves, more round or square for slow waves
- generous tail rocker
I have only tried a 2011 10'6" nalu (I understand the newer ones may be a tad less bulky), but I found it having too much volume to offer a performance ride. The rails have so much volume you cannot use them as a "wing" to plane on it foil-like in the wave on the nose. It has a good outline and tail rocker, but the rails, especially in the front section are too bulky. It is a good board, but for performance there are much better choices in my opinion.
Begin by taking your weight in kg, add 30 liters and you should have the volume you should seek in a board for performance (110l for a 80g guy). More volume and you will most likely feel that there is "too much board". Less volume is doable, knowing that you will tire faster in chop. Then, look at the rail volume in the front and you should have a good rule to select appropriate boards.
Trying to find a pic of a non-Gong board for example, found this of Rob Machado, now this is what I call performance rails on the nose ! (but too much rocker for my taste)