The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
This is tied on a VMC 4/0 Trailer hook. They are much cheaper than most big fly tying hooks. I think the next one I tie will be on a Daiichi 6/0 so I have room for a spun hair head too.
Eric - I have not used those. I will check the local shop and see if they have them next time I'm there. I do love Gamakatsu hooks!