It is kinda funny, I mean my buddy got one and when I saw it after about 2 weeks I told him "dude make sure you keep track of that adapter..." before I could finish he interupted with "already lost it"....I could not stop laughing, [email protected] hitches :rofl
I tacked welded one in for a guy on his ford a 5 or 6 years back. If you don't a class V hitch or plan on getting one that what I'd do. Just weld it where it could be cut with a zip wheel easily. They sell them at most trailer shops.
I have a thin metal cable that I put through it's hole and on one of the tiedown hooks/loops in the bed so It doesn't slide around or fall out somehow. That or it is attached to the receiver or hitch itself.
I leave mine in just about all of the time. I took everything but the adapter out when I had my truck parked in a garage at the Carnival cruise ship pier in Mobile a few months ago. I drove for about an hour after we got back from our cruise and it the adapter didn't fall out. I got lucky that time!!