Important thing about balked landing is after selecting TOGA, set an attitude which is below tail strike attitude and wait till the aircraft climbs away on its own. The only assistance should come in form of maintaining the configuration till safely away. It may happen after another touchdown but not to assist. Gear is the only part of the plane designed to withstand impact load so doesn't need as much care as the tail. Early gear retraction is the cause of Dubai 777 total destruction. Had the gear been down the aircraft would've come down on the gear but not written off.