B-Train backing?

That first set-up was a truck and trailer. The second was a set of doubles. As you found out there is a big difference in backing the two. The truck and trailer is very easy. I can back that set better than a semi, or maybe it's because that's all I drove. A set of doubles can be backed with lots of practice. In fact a set of triples can be back. I saw a driver back 3 trailers into the dock about 50' or so the first time. I asked him how long it took him to do that and he said "don't ask".