Originally Posted by g_conway

I would pick a location with a lot of people.
I would also go for a location that has external security cameras covering the are you would be.

A very good alternative would be a gun range. Bring a small amount of ammo ( 10 or less) shoot the gun, finish the deal.
It would be very hard to get away with anything with so many armed people around.

We don't have that luxury in CA.