Locks that work

Wasn't sure where to post this, but I have a kyrptonite new york m-18 lock (couldn't fit the mini fahg around my frame and stupid deep section rear wheel, ha ha) I was wondering if anyone had any advice for ways to transport this large, heavy lock on my frame, specifically for times when I don't need my backpack for anything else. Carrying the lock around in the bag gives me nice sweat patches and starts to do my weak, sofa ravaged back in after a while.

buy some strong reusable zip ties and zip tie it to your toptube, or use 3/4 and do it to you chainstays/seatstays in the triangle where they meet the track end (just make sure they're tight enough so the lock doesn't go in your wheel)