I've always used leaf hops. I've never even tried using pellets, and never seen anyone try them. Because it is quite difficult to obtain high quality US hops in Finland I have decided to try pellets. There is more variation available and because pellets have better storage properties, they are probably fresher than the leaf hops.
Anyhow I was wondering how I should change my brewing process. Nowadays with leaf hops I just throw them in the kettle and allow them to roll freely as the wort boils. I don't use any hop bags at this stage. After cooling the wort I pour it through a hop bag that catches the leaf hops. With a very hoppy beer whilrpooling doesn't seem to work. There's simply too much solid material in the wort. As for dry hopping I'm putting the leaf hops in a bag with some weight.
I'm guessing that these techniques will not work with pellets. Is whirlpooling a valid technique or should I filter the hop gunk somehow? Should the pellets be in a hopbag while boiling the wort or allowed to float freely? What about dry hopping? And does the hop gunk just sediment itself with the yeast if it is not completely removed by whirlpooling/filtering?
Advice is very welcome. I thank in advance.