[dinfinity]

50% is very generous. In the video it isn't even consistently above his body half the time. It is also constantly a good 80cm above him, so even a slight bit of side wind makes it fully useless to keep you dry.

Any wind speed above 20m/s is also going to just blow it straight out of the air or at best heavily reduce flight time.

And then there is the little issue with having a mini lawn mower constantly above your head: loud and dangerous.

Having said that, we can still applaud the creator for bringing their idea to life.