A pot-sized bet is standard in that situation, BUT I even like doing something like 2.5x pot with aces. You will get King's to call, and if the flush does call there's nothing you can do, you did all you could to deter him from doing so, and over the long run, you will make money from him calling.

http://www.flopturnriver.com/phpBB2/...ic.php?t=25206

That post is ++.