Colby should quit fighting and instead allow himself to be hit with obscure weapons like boomerangs for $600 a pop. Take three hits a day and make $1800 every day.
He makes about 50k a day and after the racist remarks and spoiling of Stat Wars I'm sure there are many filthy animals and nerds lining up to do him bodily harm, why not allow them to do so for the same bargain price Werdum payed? He is already taking CTE risk in his chosen profession, why not make a career change for much more money and be able to dictate how the damage is done and limit it to three strikes a day?
Why not be hit with another boomerang, a billy club, or training sword a few times a day and make bank?