@Bas: Well.. Any bonsai will take many years to complete. The nice thing about this one is, I do not have to worry about grwoing the stem. Unfortunately, the thing has many bulging branches which might be an issue. And eh.. It is not safed yet. The next 3 moths are critical. If it does not recover enough before winter hits, I will loose the plant.
@Leslie: I am never worries about natural circumstances. I find that if a plant is healthe, it can withstand loads of maltreatment. However, the grubs I am worried about. I know what they can do to mature established hedges (Yes, they can actually kill). So I might do someting I do not like to do, and use poison on the roots; There is a special poison that the plant may take up and when animals feed off the roots, they will die. Not a very nice thing to do, but there are dozens of them, and only one tree. Who told them life was supposed to be fair anyway..
As for learning: We all learn. And the ones that learn most are the ones taking the biggest risk. If you do not take the risk, you wil lnever know whether it would have worked. So I just take my basic understanding of plant fysiology, the natural location of a plant to grow, and take it from there.