Sarcasm does have an icon:

as does taking the p :

Insults and personal attacks are definitely a no no: we have the PM function for that.
I have a battery switch for everyday parking and a proper "club" for long parking.
If i go bushwalking and leave the truck all day I have a wildlife camera cable tied to a tree: perhaps I'll get a face or a number plate if its triggered. These things are good insurance for $69.
I have looked at bunnings for mesh. I expect the aluminium type are easy to 'trim to shape' to fit on the inside of the canopy. Cable ties are a quick set up, quick removable option. It would slow down the bad guy looking for something to takeaway.
I have become expert at vacking out smashed glass from family cars and fitting door windows, even electric ones. Barina, Jazz, falcon (3), commydore. Ipads, gps, toolsets and handbags are the targets so far, assuming all modern civvy vehicles like Agas' have immobilizers.