I just lock up my board with a bike lock run through the heelcup. It looks ugly as hell but it's a bit more secure than those tiny snowboard locks (sorry guys couldn't resist) But I'll usually find a really nice board (think Burton Custom flying V with Cartels/Malavitas - I see them everywhere at my mountain. Or a Never Summer. Those are rampant too even though you really dont need such a good board in PA).
Then again, that probably won't work if you have an awesome board Mine is worth less than 100 even with the bindings included