I discovered by accident a cheap and easy way to know when to stop backing up your trailer. <br /><br />The other day I was backing my trailer into its hiding place, a dark shed. I heard a noise and stopped to see what I had ran over. It turned out to be some bubble-wrap packing material. It just so happened that was where I needed to stop anyway. <br /><br />I got to thinking it would be a cheap and easy way to signal yourself. Simply lay down a piece of the bubble-wrap then run over it... <br /><br />By the way it was the big bubbles not the small ones. <br /><br />Happy Fishin'..... 