I guess it depends on how "trace" it is.
If I can get 200mg out of a 200g rue extraction, it would definitely be worth my while to try to isolate it. Even if it was less, I'd just keep it in a separate container and add to it each time I do an extraction until I had enough for a decent dose or two.
It would also be interesting to do some bio-essays with some real THH to see if all the hype about it is worthy. From what I hear, it's the cat's meow of the harmala world.
Convert a melodic element into a rhythmic element...