We have and have only used it a few times. It's not a huge sail and is very easy to use. It does give us a little more speed on downwind legs but I think if we devise some sort of barber hauler system for the jib to allow us to open up the slot between the jib and main, that on beam reaches we will be as fast or faster without it.We just haven't used it enough to really be sure however, and my previous experience with kites have always been using spinnacker poles and big chutes so I probably do not not yet know how to get the most out of this rig.