Serious about security? I just received my Rhino HB Immobilizer. Fits like a glove. So easy I had to crawl under the trailer to make sure it was on correctly. The guy at MITI Manufacturing was so helpful. Rob (maybe Bob) Fulcher. Got the right unit the first time. 14" doom, HB. Extra security key, Abloy padlock. $609 delivered. Expensive? Less than 2% of what the Bambi cost. I say cheap!! Check it out!