Honestly,
Unless you are a complete ass on the road, the Police are unlikely to bother you.
I tow the BladeRunner, and it is 9'6" wide and 38' long on the trailer. Weight about 3 ton. I have gone through a Police roadblock with this behind my truck, and they asked me if I had been drinking ( their roadblock was for this purpose ) then let me on my way, without comment.
I have also been 'followed' on several occasions by the Police whilst towing the same rig with the ML - which I *know* for sure is not legal. They appeared to watch the boat for 5-10 minutes, then buggered off someplace else.
Europe however is totally different.
Towing the V24 I was stopped and measured!
G.Brown and P.Little were also stopped in Scandinavia and told they were over the limits and had to add on warning tapes etc....