My good friend Jim McLaughlin has just launched a new App called The Salmon Fly Size Calculator which is based on the old Hardy Arkless calculator – for those of you that can remember it.
To use the calculator you simply enter the water temperature, the speed of the river, the level of colour of the water and the height of the river. From this data input the calculator will give you the size of dressed fly or length of tube that you should use.
Jim is in the process of designing another App for salmon fly selection. This will take the guesswork out of which size and pattern of fly to use and we should all catch more fish as a consequence.