If you cannot get ahold of your jounin by IM or E-mail TELL US! If you don't we can't know you are trying to do it. You will not be penalized if it is your jounin who does not respond.
As such, all Jounin please provide prompt responses to the fight (as real life allows) in whatever form you and your chuunin have decided to do the fight.
Good luck and get them into this post by Wed.