#6: make sure that the fixture that you lock it to is secure and not able to be able to be pulled out of the ground or apart by thieves. Many of the sign posts have been chipped away at the bottom or carefully cut to make it easy for a regular round of thievery, hence known as sucker poles.
#7: Do your best to not leave bikes out overnight, even locked. The number of fresh bike carcasses still locked to a pole but without wheels or seats or handlebars that I see in the morning is quite disheartening. 5 ways to prevent bike theft; 3 things to do if yours is stolen | NOLA.com.
(and maybe soon, this type of theft-deterrant system will be available for regular bikes…)