I recently chopped the auto gorilla from short stuff. The third plant in a row from them that is going to beat 1/2 lb. anyways each time I ran it the final result was almost identical. First run had one cob directly above with side light from another, second run had 2 cobs and this last run had 3 cobs. Nearly identical yields each time. I feel when you give it enough it will do well, to much is harmful and to little will suffer to yield well. To answer the questions above generally 2 cobs per plant for medium to large plants seems to be the best. One cob for medium to small plants. Side lighting from nearby cobs helps big time too.