Great Idea! They're light enough to just lift off with the plastic still attached and store, ready to slip back over at any cold threat. I presume the 5 gallon buckets with the holes cut out are for the lights/heat source? Seems a person could add weight to the bucket, and put the cover back on, and tie it all down in case of heavy wind.
Heck, I might try it to keep the plants growing thru winter instead of hibernating. I was wondering what I was gonna do when I get a nice bloom right at the end of summer. Not tonight though...we've got 35-50 mph winds coming tomorrow with about 3-4 inches of rain.
Good luck!