Meet the KNEKT KTP18 Trigger Pole: a handy tool that lets you capture all the action with your GoPro and start/stop it conveniently. It has a 18″ handle and lets you control your camera one-handed. You can use it in, out, and under water. You also get a built-in wrist tether to avoid losing your camera.
KTP18 is compatible with GoPro HERO3+ and HERO4 housings. It is made of military grade aluminum and stainless steel. Costs $179.99 at this time.