The simplest way to do this was of course to run over with the trailer, it has a mast crutch and all.
Having never driven with a trailer, this 45 minute drive (which became an hour, I travelled quite sedately) was far easier than I had expected. My neighbour had to show me how to use the tow hitch (Yes, did feel quite stupid when he showed my what I was doing wrong)
During the drive, I had flicked the rear view mirror to dim as some clown had his main beams on, then later I looked back and could not see the mast. A quick moment of terror as I imagined the damage 20' lengths of spruce could do on the motorway, was quickly relieved when I reset the rear view mirror.
Oh yes, when you are driving with a trailer for the first time, remember that you need to allow a lot more room when changing lanes!