I totally agree, 19 years of shunting 7.5t, rigids including 6 wheelers and artics in sometimes very very tight spaces has given me a lot of experience and familiarity with everything.
Plus all aspects of the trailers too such as curtains, roof supports etc.
I’m more concerned about getting my head around all the drivers hours than the practical stuff!
We don’t have many manual boxes in the yard these days, but thankfully I knew my way around split ones years ago.
As above though, I’m not taking anything for granted or being blasé as I know it’s a lot different on the road than in a yard.