Forget cockfighting........you need to try cock boxing!! With at least 3 rounds.
Two guys stand in front of eachother wearing nothing but boxing gloves. Their women stand behind them and stroke their cocks til hard. Then the guys take turns at punching down on their opponents cock until one of them loses his hard-on.
In preparation for round 2, the women start to work their magic again, stroking their guys ailing cock back to life. When rock hard, the girls stand back and the punches rain down until one guy loses it again.
For the final round the girls make a special effort to ensure their guy has the strongest & most enduring hard-on. They stand back and watch the painful pummulling begin again.
The winner is literally the last man (cock) standing!
His prize?..........Well, I will leave that to you!!