24" to 36/38" is about half the plant. All you read around here is how plants double to triple in height, I guess that's light dependent.
I was pretty baked when I wrote the last comment, still kinda high
I actually do plan on having another foot off the ground with a wooden platform I made. I don't want to have the pots down on the cold concrete so I'm left with about 4' before the plants touch the light. 4' to the top of the pot essentially. Even at that point the soil will be getting roughly 10k lumens per sq. ft. and growing exponentially as you move up toward the light. I guess I could chain the thing up but it was such a bitch to get it mounted in the first place. I had to disassemble all of the reflective material and crap to get to the base of the hood to drill holes and hard mount it.
I'm starting to lean toward 24" plants. If the plant triples in height I'll be running into troubles and have to supercrop tops, but as you said it's probably light dependent.
Thanks for the help man and checks my thread out. I got this grow subbed.
Edit: Would be cool if you did a side by side and maybe some top angles of the differences in each of the plants methods (topped, fimmed, natural) as they are growing now and what method you see working the best.