Pahanmukka is one of the best known pools in zone 2, and there's an obvious reason why. Pahanmukka is a deep pool which holds plenty of fish, as well as it's a good base for other pools in the nearby. 

Park by the shelter, and start fishing well above the pool itself. Often times, you will see grilse jumping in these shallower parts, while the big ones usually tend to hold up in the deep parts directly outside of the shelter. At higher water, fish will lower itself, and can be found by the tail of the pool.