We might be kind of comparing apples and oranges because of the zero-veg thing, but under 2 600w lights, my last two pulls have been around 11 - 13 ounces with 12 or 13 plants. I don't even think about gram/watt results. Not vegging skews those results pretty heavily in my favor (well, gram/watt/hours skews toward me, anyway), since I'm able to stagger harvests, but my per plant yield is relatively low. That's okay, because I've grown over 100 plants this year (so far).
Next weekend I'm cutting down 13 more plants. They went into flower on Aug 25. Since I used Protekt for the first time all the way through with them, I have some remarks. 1) my stalks are thick and VERY rigid. They don't feel woody, they feel like wood. 2)Yesterday, I found a small colony of mites infesting one small lower bud and a few adjacent leaves on one plant and no others. They've been there for a while; the leaves are so speckled they look white. Here's the thing though. They haven't spread anywhere else. One plant, one spot on the plant. Now Protekt and silica supplements in general are supposed to boost resistance to sucking insect damage by strengthening cell walls, I've always taken that with a grain of salt, but here's an instance where that may be borne out by experience.