Mollie, nothing to figure out, other then you don't heal, you reef much earlier then mono. I love and own a mono and if I won the lotto, i would still buy a bigger nicer mono. Twin engines make docking a piece of cake. You don't even need the steering wheel. We have chartered cats for big groups, not my thing. The biggest advantage is you can go through Mosquito Cut. <img src="http://www.traveltalkonline.com/forums/images/graemlins/Grin.gif" alt="" />