I can put pitlocks on the skewers and the seatpost, but what do you guys do to keep the seat from getting stolen? Cable lock? Is that sufficient? I have a short ride to the train coming up in a couple of days (moving to house near commuter rail), and want to ride to the train, but one bike has a brooks I really like, and the other bike has my aliante, which I can't stand to replace $ wise.

Cable lock? BB nail polished into the bolt head on the seatpost? Any ideas welcome.