Utility Cycling - Locking up your trailer?

I've found an old child carrier that I am going to use to haul groceries, etc. My grocery store plus the local Wal-mart both have nice bike racks. How do you lock up everything? The trailer I'm looking at has a semi-quick release system for putting it on the bike. I don't think it would be that hard to get it off if someone really wanted to.

I already carry a U-lock with a short additional cable for my bike. I also own a longer cable with a combination lock that I guess I could carry in the trailer and use it. Is this what others do?

Thanks in advance. I'm very new to this, but really want to give it a try.

If I felt a compelling need to lock my trailer, I would probably go with a cable and lock through both wheels, the frame, and something solid. Having said that, I don't generally bother locking my trailer when I use it. If the bike is locked securely, around here, the trailer is probably still going to be there when I get back.

I have a cable and padlock securing my trailer to my bike frame. I try to lock the frame to a post but sometimes I just lock the frame to the rear wheel. Because my trailer is very large and locked to my bike, it sort of prevents the whole rig from being carried off. Well, at least so far. I've had three bikes stolen, but so far no one swiped my bike with trailer attached. Trailer might deter thieves? Just too weird to steal? The more locks the/better/safe than sorry. Trust me. Victim of bike thief is not fun, but yeah criminals aren't keying in on bike trailers. That's not an easy thing to sell. I'm only concerned about someone interested in the scrap metal value of the aluminum. I think they could get more at the scrap metal yard than they could get on the street. Nobody wants something like that. It's not easy to turn over.

I have a Burley Nomad, which can be taken apart for traveling, storage, etc. There is really no 100% secure way to lock it. Like many child trailers, on the opposite side where the arm hitches to your bike is a set of brackets for the trailer arm. I usually run my 6' cable lock through that and run it through my back wheel and frame. I then use a U lock to secure my bike to the rack.

It may not be the best, but most thiefs are going to go for something thats not locked first.

I just have a length of cable I loop through the frame of the trailer and then that gets looped into the bike lock that's securing the bike. Although I agree with most of the posts that trailers don't seem to be of much interest to thieves

I've welded a loop onto the frame of my trailer just big enough to put the lock through.

If I was leaving it for a long time I would pop the wheels off and lock them too.

Ive also replaced the "quick release" plasticy bolt with a standard one for increased theft resistance and to get it more secure to the bike. Still only takes a few seconds to fit and remove but I have to remember to take a spanner with me which is no big hardship.

It's hard to see but I've run a looped cable from the rear axle, under the body and tow arm to my chainstay near the hitch point. There's a padlock securing the loop to the bike there.

175961

The cable runs through the trailer's boom. An old safety strap from a German ski binding keeps the lock out of the way of my heel.
http://i478.photobucket.com/albums/rr147/Rod_Smith/bike/DSC07160.jpg

I didn't know that hose clamp was broken until I looked at this picture. I will replace it asap.