
As you may recall, my wife and I bought a beautiful Camp-Inn Teardrop trailer towards the end of last year. Since then, I have seen a number of stories about people who have had their trailer stolen out of their driveway or while they were out hiking. Losing your trailer to a thief is not only painfully disheartening but a major inconvenience as you have to file a police report, deal with your insurance company (assuming you have insurance), find lodging if it happened while camping, replace the trailer and all your gear. If your trailer was hand-made, you have a lot of labor and hard effort put into the build process so it not easily replaced. The entire process can be emotionally overwhelming. I don't know what the odds are of getting stung by thief but I do know I want to take some steps to try and prevent it.
Now, there is no full proof security solution and a determined thief will find a way to defeat even the best lock. Therefore, locks are only a deterrent, the more difficult the lock, the better the deterrent. My goal is to provide enough of a deterrent that would be thieves will move on to an easier target. There are a lot of different security solutions out there, some as low at $20.00, some as high as $300.00 or more. Some from well-known brands and some from brands that might be new to you. However, consider the thousands of dollars you spent on your trailer or the hours you spent building it along with the emotional distress and inconvenience of having your trailer stolen, isn't a few hundred dollars a reasonable price to pay to protect your investment? You should also keep in mind that a $20.00 lock is going to give you $20.00 protection.
Given there are so many different options, I spent a great deal of time reading reviews, looking at specs and watching videos to try and find the best solution for us. I found that there are generally two types of locks or ways to secure trailers, coupler (aka hitch) locks and wheel locks (aka the Denver Boot). Each has advantages and disadvantages. So, after extensive research, I decided that a two pronged approach was best for us and therefore selected both a coupler lock and a wheel lock. This post (Part I) will focus on the coupler lock while Part II will cover the wheel lock.
Coupler Locks - These locks are supposed to prevent access to the coupler hitch on your trailer making it difficult for thieves to hitch your trailer to their vehicle. After watching a number of videos on YouTube, it became apparent that a LOT of the mainstream coupler locks were not much of a deterrent at all. They were easily defeated by a crowbar, hammer or bolt cutters in a matter of minute or two and in some cases, seconds....seriously....SECONDS! These solutions provided only a false sense of security and that was not going to work for me.
I did manage to find a few coupler locks that were actually quite rugged and not easily defeated by common tools from a hardware store. The AmpLock, Megahitch and Proven Industries lock all seemed to withstand quite a bit of punishment without failing. The AmpLock was made from cast iron while the other two were made of hardened steel and used lock designs that resisted both lock picks and other common attacks. The AmpLock secured the coupler by sliding over the lip of the coupler and a ball mechanism slid up into the coupler, preventing access to the ball hitch. The Megahitch and Proven Industries locks both covered the entire coupler.
Each of these seem like really nice locks and much more in line with what I was looking for in a coupler lock. However, there are two main drawbacks of coupler locks, securing the safety chain and securing the wheels. I will address the wheel lock in Part II and as for the safety chain, if it did not secure the safety chains on my trailer, it was a deal breaker for me. The purpose of a safety chain is to keep the trailer attached to your vehicle should it come off the hitch while traveling. If a thief shortens the chain(s) enough by looping it around the hitch or through the bumper, they can easily haul off your trailer even with your coupler securely locked. Of the locks I was looking at, only the Proven Industries lock secured both the hitch and the safety chain. For me, this was a major advantage and one of the biggest reasons I chose this lock for my trailer.
I did manage to find a few coupler locks that were actually quite rugged and not easily defeated by common tools from a hardware store. The AmpLock, Megahitch and Proven Industries lock all seemed to withstand quite a bit of punishment without failing. The AmpLock was made from cast iron while the other two were made of hardened steel and used lock designs that resisted both lock picks and other common attacks. The AmpLock secured the coupler by sliding over the lip of the coupler and a ball mechanism slid up into the coupler, preventing access to the ball hitch. The Megahitch and Proven Industries locks both covered the entire coupler.
Each of these seem like really nice locks and much more in line with what I was looking for in a coupler lock. However, there are two main drawbacks of coupler locks, securing the safety chain and securing the wheels. I will address the wheel lock in Part II and as for the safety chain, if it did not secure the safety chains on my trailer, it was a deal breaker for me. The purpose of a safety chain is to keep the trailer attached to your vehicle should it come off the hitch while traveling. If a thief shortens the chain(s) enough by looping it around the hitch or through the bumper, they can easily haul off your trailer even with your coupler securely locked. Of the locks I was looking at, only the Proven Industries lock secured both the hitch and the safety chain. For me, this was a major advantage and one of the biggest reasons I chose this lock for my trailer.

The keyed lock has a brass cylinder with steel shank/shackle and locking pins that slides up and inserts into the tongue and sleeve. It is a 6 pin design with special security pins making it pick/bump resistant. It is on the underside so this does make it a little inconvenient but that also means it is more difficult for thieves to access. You can hit this lock with a hammer all day and this will hold firm. There is really no way to get a crowbar in there to pry it off and bolt cutters would be useless. I suppose you could spend a while with a loud cutting wheel and eventually make progress but thieves are looking for quick/easy targets.
As previously mentioned, you can actually secure the safety chains as well by attaching them to the tongue and then inserting the tongue into the coupler and the sleeve over the coupler.
I like the aesthetic appeal of the Proven Industries lock over the Megahitch. I was told by the manufacturer that puck has 4 color options, Silver, Orange, Red and Blue. The lock retails for $195 at the time of this posting and is sold through retail trailer vendors. Contact Proven Industries to find a retailer in your area.

They do have different models that work with various coupler type designs as well. So if your coupler is a different style than what I have, check with Proven Industries for the correct model number for your hitch/coupler.





I know this has been a long blog post but I am hoping it is informative and provides you some ideas on how you can secure your trailer from those punk ass thieves that want to steal your property. Be sure to catch Part II where I cover wheel lock type devices.
I will be posting a youtube video of both my coupler lock and wheel lock showing them in more detail and how they install/remove. I will update this blog post with a link to the video once I have it ready.
As always, please feel free to leave your questions/comments below or on my YouTube channel and I will try to address.
Until next time, take a bite out of crime and secure your trailer.
Jay T.