[rverdlm]

FWIW, when I had leaf spring trailers I always carried a spare spring. In seven years of towing them I broke springs 3 times. Springs are cheap. Should be well under $50. There didn't seem to be any particular reason for the problem. I started carrying a spring after our caravan trip to AK. The company we went with would not let anyone start the trip without a spare spring as part of their emergency supplies. On that trip we changed as many springs as we did tires.