Most “wave like” issues come from the lack of time a hull is left in the mold. Hand layin has nothing to do with those types of issues. Hand laying helps reduce the risks of air voids, uses less liquid materials resulting in a lighter stronger hull, allows for use of full sheet materials verses spraying from a gun. There only 2 or 3 bass boats built now that are truly all hand laid and those boats are left in the molds for days. I’m not saying one is better than the other.....