When I install my BAL's , I always lock each one with a pad lock, this does two things, stops theft of the chocks and keeps the chocks where you left them therefore keeping you RV where you left it! I also use a security cable from Lowe's on the spare tire, locked to the bumper with a key matching lock as the BAL chocks.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS