Tape a ceramic floor tile to each competitor's chest and back.
There should be at least one "required gun" stage with a .300 Win Mag NEF Handi-Rifle.
Tons of no-shoots. Identify no-shoots by stapling hamburger boxes, shopping bags, etc, to the targets.
High round counts. Really high.
Perhaps provide a set of wall-climbing spikes (look for them in the ads in the back of Black Belt magazine) to each competitor. He will have to shoot the course while wearing them.
"There is no worse tyranny than to force a man to pay for what he does not want merely because you think it would be good for him." – Robert Heinlein
"Contrary to popular belief, your vote does not
matter, and you cannot
make a difference." - Bob Murphy, "Picking Neither of Two Evils"
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