Yes, it's not doable really. Because it will literally require EVERYONE on board to work, otherwise it won't work. If I can buy LTC-scrypts prior to the fork and find even one exchange to sell them back after the fork, then I can have free LTCs for dumping on the LTC-x11 fork. And chances are there will be more than one exchange where I can sell back scrypt LTCs.
No, you can't.