I have been looking for a while for a good fly box to story large pike flies but i did not have much luck.
Fullingmills do a large box but i dont think it is worth the money.
A cheap and cheerful method of storing pike flies was given to me a few weeks back so i thought i would share it with you becuase it is very simple, cheap and a great idea.
Clear plastic pencil cases from Tesco which cost about 40p is the answer.
You can see inside the case and select your fly before digging it out and you can stuff loads of these cases in your pockets.
The only down side I can see is that you need to dry your flies out after using them but i can live with that.