The new boats were a result of the weight change and other outstanding engineering concerns. Its not any one factor at work, its a dynamic system that you cannot blame just a single element as the culprit.
If there's a sign out front advising you of the potential for getting splashed, you have sufficient warning. What are you expecting, a body mapped image of the potential areas that how many ounces of water may land where ? If water is an issue, then maybe impregnating your clothing with Ultra-Ever Dry (its a super hydrophobic compound) is the answer. We are talking about an amusement park, not an evening at the Metropolitan Opera.