Size and maturity has much to do with final yield of course. Put it this way, grown indoors my strain ( from clone)will produce just over a dry OZ in my small set up with the plants kept to under 18" tall, but when I put that same strain (clone) outdoors and let it veg up for 2 months it produced well over 7 dry OZ with a mass of popcorn bud left on! Don't need to be tall though encourage it to bush out by removing the tops during veg.
Outdoors they can attain the size of small trees if you plant early and let them go so yes its a viable way to yield a large amount if you do the same indoors. have a search for
'Heath Robinson' I think hes a member here..... he has grown wonderful indoor 'trees' in the past
*edit* Here you go, (link below) Heaths a master at this game and has been for many years, this is staggering,
2 'trees' producing
over 70 dry OZ in an aquafarm. I dont know anybody who does this better than heath.
Heaths Critical Mass Tree grow -rollitup.