I have seen the hardiness and longevity that hedge oaks possess but I was wondering if anyone has used them for structure in a lake. I know the pitfalls of using "green" oaks but will the Hedge Oaks cause the same staining in the water? We have drilled 40 holes with a 12" auger and we are planning on setting the structure next week in our 5 acre lake. Any help would be appreciated.