Theres alot of old timers that will swear by not touching your plants at all, dont even pick off dead leaves. My friend and I have a sizeable outdoor medical garden, we've been growing outdoors for almost 10years now, so between us both we have tried alot of different techniques. Alot of it depends on the strain and how it grows, what and how it responds to a given technique and what your trying to accomplish. Ive taken the same strain and let it grow and do its thing, while pinching(fim'ing) the shit out of other ones and besides the look Ive never noticed any sort of signifigant difference or patterns in the yield. For me the most important factor for outdoor plants is the having the garden where it will recieve the absolute most sunlight possible, while also providing the plant with the most space for its roots to spread and giving it the maximum amount of food that the particular strain can handle, so alot is strain specific. Ive always dug big ass holes and back filled them with my own blend of organic's or soil compounds, but Im quickly becoming a much bigger fan of 100% organic grows cause the biggest plants Ive seen are always pure organic, and Im talking about 10+lb plants, huge 15ft monster bushes. I saw a picture of the biggest plant of the year last year, over 17lbs of dried product, never could find out the strain, trust me I tried everything I could to try and figure it out with no success, I believe it was in an issue of high times but I could be wrong. One thing for sure is I do alot more training, topping, fimming etc. for plants indoors to maximize space, but Ive only been growing indoors for almost 2yrs now and Im just now getting everything dialed to where it needs to be, although I just lost a cycle to mites that I battled for weeks before I finally threw in the towel, so now Im remodeling and adding on, so I'll eventually have over double the sq. footage I do now, plus a seperate vegging room, so I can have a true perpetual garden going, instead of grow tents and closets.