It's no problem to take your hands off of the controls. -As long as you're away from any nearby objects! The hang glider will recover on it's own, every time! Training is just needed to launch and land the hang glider. -That's what the tandem pilot is for! By the way, the hang gliders cannot get into an unrecoverable dive or spiral. They are self-righting. Of course, proper care needs to be taken by each pilot to ensure they fly responsibly, within their own window of capability.