Alko wheel lock

Forgot to mention the caravan cannot be hitched to the car as the front of it is tight up to a hedge.

Trolly jack under a lifting point (axle), spin wheel. align wheel lock point ....

We have the Alko jacking points and Alko side lift jack quite easy to use and stable ,very easy, which we find if on a site without security barriers just make sure you chock the offside wheel,before releasing hand brake

Does the caravan not move when jacked up and not attached to the car

In a perfect world you would have the car attached to the caravan for stability .... unfortunately, as in your case, it's not always possible to connect the two. I jack my twin axle to fit the wheel locks, and ... so far .. it's not moved. You just have to be careful and jack the caravan the minimum required to spin the wheel.

Most of the time I use a heavy duty chain and lock.  £38 from a hardware store.  Handy as can fit to either wheel

 

 

 

would it be a good idea to use wheel chocks on the opposite side? 

Serious question MM, I've never jacked up a caravan and hope never to have to.

If you have chocks then use them ... every little helps. 👍 Bear in mind though that the caravan could still pivot around that chocked wheel hence the advise to connect car & caravan if possible.

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thanks, I know this may sound strange to you but it's my biggest nightmare if I had to change a caravan wheel while towing

And offside would be even worse...