Hi Guys, Rocker can be as much or as little as you like/design into the hull(within the restrictions). Greater rocker gives you greater load bearing shape, lifting bow and stern out of the water. Greater rocker enables quick turns, tacks, gybes and mark roundings. BUT, more rocker can cause excessive pitching motion (hobbie-horsing) in sloppy seas. Also can reduce the water-line length and therefore potential speed. Where the maximum rocker draft is located along the hull length will determine hull response to wave action; forward, results in excessive bow lift when punching into a wave, a slowing action. Gives superior down wave/surfing capabilities, but you need to slide forward, even onto the fore deck. Rocker aft gives greater crew support especially for 2 up, the trade off is having sufficient buoyancy in the bows on a reach/off wind. B scary sliding down the face of 2+ metre waves and watching the bows bury to the main beam, and you are both already sitting on the rear beam. So how much rocker and where to place it is a design challenge. There is some latitude with the mossie BRR, especially if building a plug for glass, but the tortured ply places further restrictions because of the nature of the medium, taking numbers to excess and the ply will explode, well split anyway. Still orifice wincing!
Aldebaran 6 split in 3 places, twice under the forward chain plate at the keel, right next to the edge of the FG tape, (I was pushing the 4mm ply to the limit of the template curvature/restrictions). The 3rd split when I dropped the 8 metre tape measure into the hull when it was tortured but not framed,
See following post for 1st time sailing report and measurement day.
PP