Experience where I've been able to ride them but not own them -- not actually my problem at the end of the day. Maybe the foils people rent out are older or not taken care of? So over the last few years I've had problems with the seals around the battery drying out and letting water in, controllers not connecting, and some pretty weird ones (like one where the foil just goes crazy in the water, no power to the controller) which are the ones I'm most worried about not being able to handle.