Looking at that bottom picture, I would say that surfing the one in the middle would be a big improvement over that flat rockered steel contraption at the end. Lots of refinement from one to the other! You'd have to be a fricken Rob Machado to surf that darn thing.
Twiz, I think the rocker would work great. next design model "the ladder" lol...I love seeing my old shapes ridden to death!and not listed in craigslist!