Dave,
If your story is correct, then I presume that after a days hard work of moving heavy supers I just
need to jump into the air and carry them that way
- how much lighter do you think they will be?

Maybe it depends on how high I jump.

Or were the bees flying so fast in a circle that a vortex was formed and due to it being from the
hot insects the air rose, again decreasing the weight on the lorry?

Peter