Thank you. I've seen the roller bars you are talking about for sale. I've never seen a dyi version. That's a great idea!@Jadesun6 - WOW free pallets!! Another thing I saw was putting a PVC pipe - or something round that rolls when trying to get over it or stand on it. That way if a whatever predator climbs the pallets trying to go over will not be easy, if not impossible. We'd do it to our yard area if we found some scrap type stuff. Wouldn't matter the color - just the larger size I believe. I didn't think to google it for you - probably there! Welcome the AZ and BYC!