Your attachment link did not work, however, I have seen many large trees with lightening protection where I live. I live in Annapolis, MD. Just last week I went on a tour of the Naval Academy grounds. The tour guide, the USNA's staff landscape architect, explained to us their tree protection method. If you've never been there, the academy has a lot of old, nice, tall trees. In order to preserve them for future generations, they'ce installed 1" copper cable to the tips of the branches (top and sides). They can either attach a special end to attract the lightning, or fray the end of the copper wire to serve the same purpose. The cabnle is attached to the tree using copper connectors. When it reaches the ground, they run it out 10-12' to a copper rod. The rod extends 10-15' straight into the ground.