Like everyone else has said, be situationally aware. But you want to slow theives down, make things hard and give you a chance to get out of the showers and back to your bike. You can make a tarp shelter incorporating your bike into it, with front wheel removed (plough point tarp set up, wheel holding rear of shelter up, bike up front holding up plough point, staked to the ground). Make the bike and your gear physically hard to steal. Also, always take your valuables with you, never leave anything of value lying around. In the past I had a thick ziploc bag that held everything and was never out of my possession; that bad boy took showers with me, etc. People are nuts, keep your stuff close.