I never leave my bike unattended on the jack without straps. My bike spent each of the last two winters on my Craftsman jack without incident. If I'm just doing a quickie belt adjustment, I might throw it up there for a minute or three without straps. But that's very rare. When I lower it I just hang on to the sissy bar and right handlebar grip as I lower it, just to make sure it leans towards the side stand. I've had it decide it wanted to lean to the right instead. But the jack lowers it nice and slow and controlled.
