The above trailer cost me.....not very much as my dad gave it to me. This was after I asked him to buy one for me like this one. (My family live in the Netherlands where these are a lot more common).
He bought it for €1500 which by the time you add the ferry etc is £1500.
5m x 2.15 bed, ally sides, 3500kgs mam, 790kgs empty, 3x 1800kg axles.
The loading is real easy: The strap attaches to the trailer on the side away from the log, goes over the trailer bed, under the log, over the top of the log and then back over the trailer to the tractor/Landy/winch/team of Oxen/slaves etc.
It means that there is force on the trailer opposite to the force on the log which means the trailer will not move however big the log is you're pulling up against it.
The pulling force required is much less than that required to lift the log but varies with the angle of ramps, diameter of the log (bigger is relatively easier) and height of the pulling attachment (higher is easier, up to the level of the trailer bed plus the dia of the log)
Turntable trailers are perfectly legal. Bateson are talking "not that much sense"? In Germany, land of the Euro-conformists and rule-obeying orderlies they're for sale and popular, same in Belgium and the Netherlands. (not sure on other EU countries as I don't get out much.)
You cannot currently build any trailer over 750kgs yourself without having it officially inspected or some such bull (since last year sometime) , and it will only pass if you use parts that have been specifically approved for a trailer exactly as you're building, down to lights, reflectors etc. Apparently "universal" trailer parts are a big no, whether they're rated adequately or not:confused1:
I believe these rules apply for modifications as well, which means that putting different lights on a newly bought trailer for example is only allowed if they have been approved for use on that trailer...
Maybe the UK market is too small due to an uninformed customer base?
Just to be sure I made sure mine was built before all this came to play (think the first step into the abyss was 2008?)