Ben you also need to factor in that your hull is known for being slow in light winds. The lee's built the e5 and Paul the E6 to try and get better performance when the wind was lighter. That said she is still one of the fastest boats out there in a breeze. I think the cost argument for two suits is a non starter, most of the active fleet now have them and if you look at the wide and varied hull and rig options from early boats to newer ones it's all down to cost. A second main costs less than a second lifting foil, but we are a development class, if people want to sail a one design there are a shed load to choose from. Having sailed 29ers they are not all as even as the manufacturers would like us to believe.