If I understand it right long overhangs were the most effective response to the old CCA design rule
that favored a shorter waterline legnth.
Better standing for a boat with a shorter waterline length, a boat that when heeled over could lengthen dramatically, adding to it's hull
speed. Bill Tripp worked that angle very successfully. Makes for a very pretty boat as well.
Angle of heel should be considered (along with ballast weight, displacement) a hull design element. After a certain degree of heel speed is lost
. Different boats have different (slightly?) sweet spots this way. Sailing will tell where your is. I think on my Challenger I started losing efficiency/speed after 20 degrees or so. On our old LeCompte it was a bit deeper.
This is why some folks invest in a clinometer.