Jim from Denver, CO on 5/7/2010 2:23:47 PM:
I purchased a Cable With Looped Ends 15 Feet By 3/8 Inch Diameter and lock to take care of this. I will have a bike and trailer as well.
Like this one:
www.hardwareandtools.com/Cable-With-Looped-Ends-15-Feet-By-3-8-Inch-Diameter-72DPF-by-Master-Lock-8258493.html