I have been using the bolt lock pin for over a year. I like it since its one less key that I need to carry.

 

I have a similar style to this & it definitely makes it slightly more difficult attaching the chains for our cargo trailer (they have the spring loaded 'clip' that closes off the chain hook opening.
Next time I'll find one with a 90* on it that takes less lateral space.

 

Here is what it looks like installed. I haven't had issues with chains but my trailers use 0" drop and 4" drop and have a good length of chain.

 

This is what I’ve got and I’ve loved it. Always hated having the hitch bounce around if it wasn’t hooked up to anything. Had to drill a hole in the shaft but it was well worth it.
Tow Ready 63201 J-Pin Anti-Rattle Pin and Barrel Lockset for 2" Square Receivers https://www.amazon.com/dp/B001G4Z69O/ref=cm_sw_r_cp_apip_GhfT4olGeLiko

 

Harbor Freight has one that is chrome with the key going in one end that is covered with a rubber cap to keep dust, dirt, salt etc out. $14.99. I have this pin and it works well but I do take off the hitch cover in the winter-salt is the state mineral in Pa in the winter!

 

I use this one from Master Lock. http://www.masterlock.com/personal-use/product/2469DAT

 

I have been using this on my 2016 for a year now, It works great!!!

 

This is great - I added it to my Amazon list too - once I get my TT i'll be getting this.

 

I use one of these. Made by Master in stainless. I don't worry to much about keeping up with the key, it stays in the console since the lock is on the truck. Using the truck key isn't really an option since my truck is "keyless".

 

My truck is keyless as well, but it has a key inside the FOB and has a full key for the console and glove box. I use the full key.