A common misunderstanding about lightning protection systems is that they either attract or repel lightning; they don't do either. Lightning Protection Systems are designed to shield the tree itself by providing a safe, low resistance path for a current to reach the ground.
Once it reaches the ground, the energy from the lightning dissipates deep in the ground. With a properly installed Lightning Protection System in place, the tree is never actually struck by lightning. These systems are typically 99% effective in preventing damage or injury to your trees.