My First Impressions of the ProLockers, I think this is the Easiest Securing System Available for your ATV today. You just drive into the Locker (after you have installed), pin the Locker in place, put your lock in the rear hole and you are good to go. To remove your ATV from the Locker, remove the lock, unpin and back straight out. This is way to easy. A tie down works very well but provides nothing in the way of security. How much is your ATV worth to you?
I think this is very inexpensive peace of mind to protect your ATV.