We have a protocol for deciding when to yootle: if the possibility of yootling is so much as mentioned then we must yootle. The only fair way to object to yootling is to dispute that it's a 50/50 decision. If it is a fundamentally joint decision then how would you object? "I want to get my way but not pay anything"? Not so nice. You could say "I don't want to yootle, I'll just do it your way". But that's equivalent to bidding 0, so might as well go through with the yootling. And after 9 years we do have quite efficient ways to conduct these auctions, with fingers or our phones or out loud.