Sure there are. But how many of them don't involve reverting to a "state of nature" where you just end up creating some sort of feud between him and yourself. Or, if you're a true libertarian, there's always the "private arbitration" route - with its absolute lack of guarantees that one or the other party will submit to the decision of the arbitrator.
See, this is why I rejected libertarianism. When it moves beyond being just a bunch of bumper sticker slogans tossed out to sound good, when you actually start thinking through many of the implications of the more radical libertarian arguments, you see that they just don't hold any water.