We have a 30' 50A cord, and it is usually long enough, but once in a while I need a longer one. Be glad you have the extra length. If you find a 15' cord, and carry only it, I guarantee you will someday regret that decision. JMHO
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.