Your initial thought on reading the heading of this post might be something like ” Steve’s maths needs some work”! That maybe so, but not for the purpose of this post. You see one of the challenges in summer fly fishing is the time of plenty. In many waters trout have a diversity of prey that is available in volume and much of it easily obtainable at times.
What does this have to do with maths?
Well for my personal fishing I am keen to use 1 fly for most of my fishing, often for no other reason than I enjoy it, sometimes because it is more effective. However, summer time fish food abundance means that fishing more than one fly where fishery rules allow, really ups your chances of catching trout. Particularly in scenarios where it is not possible to see fish in the water.
An example of this is using a dry fly with a nymph dropper on lake or river. Most peoples initial reaction is that using two flies rather than one doubles your chances. This is wrong! Yes a trout could see the dry fly and take. Yes a trout could see the nymph and take. A trout could also see the dry, not take it and eat the nymph or vice versa. So moving from one fly to two flies at least quadruples your chance of getting a bite, if you are fishing in the right place that is! Play with this concept during summer.