Simple solution...
Replace the fasteners with stainless cap screws, crank em down firmly, then fill the heads with liquid steel, PC-3, or some other epoxy.
It'll at least slow em' down a bit, not to mention piss'n em off...
And you too, if you ever wanna remove em...
Next we meet, remind me to show you some of my "slow them thiev'n bastards down" invenshuns on my trailer & light bar...