i've had 'BIG BLUE" (11/2 oz spinnaker) up in Mac races with 40 mph true, prolly 30 app. the sail held up fine. what does happen with a tank like aeolus is the overpowering of the sails makes the vessel oscillate back and forth to the point where the booms would start dipping into the water. dangerous for sure. but we'er racing. so i would rotate the spinnaker around the mast and 'hide' just enough square footage behind the main that the oscillation would stop. the sail was not hurt.
"more sail"
"more sail"