How about a rustler duel for civilians?
How to secure it: big cage in the ocean, 400-500 high, pretty big in width.
How to make it fun: plant some trees in the ocean.
How do they spawn: in the air, opposite sides(so 1 faces north, other faces south) in a Rustler.
How do you determine winner: the person who dies first/leaves Rustler first loses.
Will this affect gameplay? No, Rustlers can't leave the cage, the cage is in the ocean. Other players can't reach them because of the boundaries and the Rustlers are trapped inside the big cage. They don't affect gameplay at all.
Why do I want this: to make dogfighting easier and more accessible for people. Now they have to go to the airport and find someone to fight against.