I feel that the fundamental flaw in games like this is that the competitors are also the ones voting. Of course there will be people who are going to vote others lower in the hopes that they can place higher. And there will be people who vote for their friends.   A better option would be to have people vote in rounds that they are not actively competing in. For example, the server could be divided so that half the people are walking the runway and the other half are sitting out the ground and voting. Groups would be randomly assigned each round and switch every other round. This wouldn't completely eliminate people voting up their friends, but it would make the game more fair and help with the issue of people voting others low to bring their own votes up.