Are you just playing the underachiever or is this a real problem?
The point, mi amigo, (notice how I intersperse my comments with another language), is that this cannister which is available at most offshore marine outlets is pretty standard rigging for large offshore vessels and costs about $700. If a coyote is getting a couple grand per person, a throwaway device at that price makes sense.
Heck, you could haul a 100 kilos of marijuana over that nice round wall crown and not abrade the line much at all.
When the wind is right, all you'd need is a kite.
For every hi-tech barrier solution, there is a junkyard way to defeat it.
Yes, any barrier can be defeated with time. That's where the border patrol comes in.
Instead of scurrying across an open border in the dead of night. (<not an animal reference kut) they have to spend time in the open trying to get across.
That raises the prospect of getting caught and stopped significantly.
Q: Do you lock your doors on your house when you are away?
If so, why? Someone could probably get in pretty quickly anyhow.
Wait, do you lock your doors when you are home?
If so, why? Do you think you catching someone in the act of breaking into your home would be a deterrent to them entering your home?
I just can't see why locking your doors would make a difference, Oh boy, here I go underachieving again.