Sounds like a incredible hunt. And if anything can be learned from the experience, it's that a mature buck can appear at anytime, anywhere. I would go in with a climber or loc on stand and set up in a tree close to the built stand if he picked you out of it the last time. Or make the proper adjustments to the old stand, and maybe take some limbs with leaves on them and set up around the old stand to add some cover. Don't pressure the big guy too much, but hunt him hard. Don't give up, he could make an appearence at anytime.