I’m going out on a limb to say the blanket thing is fire hazard. I’m pretty confident that no fan manufacturer would advise you to go this route. Because fans have a motor that can be ran non stop they are continuous duty cycle, the blanket can cause bearings to overheat. Why take a chance?
Cheap is cool, torching your home and garden is not.
Cheap is cool, torching your home and garden is not.