Obviously you just put buckets under the plants to catch all of the light that falls through, and you have a machine that picks up the buckets and dumps them ou

Obviously you just put buckets under the plants to catch all of the light that falls through, and you have a machine that picks up the buckets and dumps them out over the top of the plants again. I think it'll help to paint the inside of the buckets white... or maybe black; not sure. Oh, and the bucket-dumping machine should be solar powered. </sarcasm>