The main differance in style seems to be whether to tie the legs on top of the hook or underneath?
I beleive the hopper was to be fished almost sunk, on the point, with 2 shipmans or bobs bits on the dropper. These flies to be more visible in the surface than the hopper.

__________________
It is in truth not glory,nor riches, nor honours that we are fighting,but for freedom - for that alone, which no honest man gives up but with his life.(Declaration of Arbroath, 1320)