How to deal with fallen trees post Gabrielle

Cyclone Gabrielle has left several North Island towns destroyed beyond recognition, but it wasn't just the intense rain that caused the devastation. The strong winds uprooted trees, downed power lines and blocked roads, destroying more than 80 trees at Taupo's Wairakei golf course alone. So how do you know if a tree is damaged or waterlogged and potentially dangerous. Zach Fell is an Auckland Arborist. He told Nathan Rarere how busy he's been.