This lock and chain is uncuttable. The would be thief would need to cut the stand (thus ruining it). It is actually a motorcyle lock but is one tough lock. Downside, (it costs about $80.00, and is heavy, but your stand will still be there when you need it.)

http://www.kryptonitelock.com/inetisscripts/abtinetis.exe/PublicArticleDetails@public?artid=3036&atf=pro ducts_item&pgrp=20