What is wind sailing? Wind sailing is a branch thinning pruning technique done by removing branches to reduce the overall foliage of a tree. The process is marketed as making trees safer by allowing the wind to more easily pass through the branches of a tree. Why is it so controversial? Although the practice seems sensible, there is compelling evidence that a tree’s outer limbs actually divert wind from the center of the tree and act as a wind barrier. The more limbs the tree