Well on my sail you can't take the battens out so there is a way to do it. It requires flaking the sail and then rolling. It dosen't need to be rolled on a pipe. I'll try to explain how to do it but a picture would be helpful.....don't have one!

The sail is flaked into three sections. It's done so the leech is kept together in alignment. Then you simply start at the leech and roll the sail. Don't roll it tight. The drag about having the battens in like that is you have to fold the jib before you roll it. On a breezy day by yourself the thing is a pain to get put away properly.

Have Fun
Mike