I think some people do go fishing this way, but with a length of string attached to the arrow. (The fish has to be very close to the surface for it to work; otherwise the water slows it down too much.)
That saying always confused me. I could push a screw to the right or left all day long, and nothing would happen unless I turned it either clockwise or counterclockwise. People would just keep repeating that to me as a way to remember, but to this day it’s completely unhelpful.
The way I finally got it was this: clockwise is the direction of the clock, which goes toward the future, and the future is getting the job done. Therefore, associate clockwise with something coming together, and counterclockwise with undoing that work. Since I think in terms of associations, reminding myself of it takes about a quarter-second, which is a lot faster than trying to interpret this silly mnemonic.
Am I right that this shop is next to Paddington Station?