Towing two trailer at one time

patriotgrunt wrote:
I've always been amazed by the people who tow a RV and their boat at the same time, but I'm curious if it changes how you drive? Can you back-up both trailers at the same time in a normal fashion or is there a trick? How do they handle taking turns?

I'll repost for ya' as some can't seem to answer your questions or take your thread or off topic with legal blather.
I've towed RV doubles for eight years with a truck/5th wheel and a 3400 lb 18' 6" bass boat (63' total).

I also tow ag doubles which may be two GN trailers or a GN/bumper pull trailer.

You will not back these type combo's up in a normal fashion like around a corner getting into a campsite/drive way/loading dock/etc. It takes a lot of room to back even in a straight line even just a short distance.
Much depends on the 2nd trailers ball to axle length....just like backing a short trailer vs a long trailer behind the tow vehicle.

Making turns going forward is easy. The back of the first trailer swings out which may cause the 2nd trailer to follow the same set of tire tracks.

Now if the first trailer was like a LEQ horse trailer with its axles aft close to the back on the trailer then there is little to no tail swing.
Once you get the hang of going around sharp corners you can swing the back of the first trailer out sharply at a certain point which swings the 2nd trailer out even farther as it makes the corners apex.

Its not that hard to safely pull doubles.
It helps to plan your moves such as getting in and out of the fuel pumps or final destination. You don't just pull of the road into any mom and pop fuel stations.
I keep my speeds down and forget about keeping up with the flow.