We adjust the painter multiple times per day to keep her surfing the stern wave. This drastically cuts down on drag. Last year I did some testing with our RIB and a digital load cell. The difference between a "surfing dinghy" and "towing" was HUGE. I need to do this again but this time shoot some video... Dinghy's don't have to be a drag it can come down to how you tow it and how you tow it can drastically cut down on the drag it creates....