The body scanners are not your decision but the TSA's decision, which Canada is just following.
My best advice is stop the purchase, but I know they will not do that.
I want to tell you about profiling. I have no bad connotation about behavioural profiling. I don't think behavioural profiling is the first thing you need to jump into. I think what you need to do, again, is assess them. Create a system of trusted traveller and trusted worker, which can be the same system on different databases. Then start to alleviate your screening procedures with sniffing machines, and then look at passengers for more behavioural signs. I don't believe that to do behavioural profiling without having a whole system behind it is worth anything.