Note that the curvature of a number of the mathematicallygenerated teardrop shapes is concave. I don't believe that's what we want, so that should place a limit on the "m".
Actually, it looks like the curvature may be convex at some point (close to the tail) for almost any value of m. Fortunately we don't usually take the boattail all the way to a point, so that's not a worry for us.
soD
