Sometimes you find yourself by the river with the wrong gear, if you are lucky (we all know it happens that we forget a rod, a reel, a fly box, wading shoes. I happened to us all). Fly fishing is being able to adapt, no matter what.
This is what happens when you find yourself by the river with a #3wt looking for small trout and there is a Big Moma feeding on dries. What would you have done?