Looks like you got a few great answers already but my .02 worth is: I carry a 7'6" 3 wt and a 8'6" 5wt. Both have furled leaders that I have grown to love with 3 to 4 foot of tippet which makes my total leader length in the 9 to 10 foot range and I have used up to 12 foot of leader when the fish are really spooky. As far as size of tippet, again it has to do with the fish. I carry 5,6, and 7x and will use 6x most of the time. If I am seeing alot of fish rising and getting no bites, I will go down to the 7x after no luck changing flies. I also like to use a dry/dropper rig and will use the 7x on the dropper almost all the time. To add a little more to the mix I also have a bamboo rod that is a 3-4wt that is fun to fish with also.
As far as flies, like I said I like to use a dry/dropper rig that I will use a larger caddis and either a nymph or midge as a dropper. Zebra midges, prince nymphs, yellow sallys, copper johns, hare's ear, flashback pheasant tails, and pretty much what you are used to using in the mountains will work on the sip. I have caught fish on everything from a size 20 to a 12, just depends on the day. One thing that you can never go to the sip without having in your flybox is a wooley booger. I have caught fish on white, olive, black and believe it or not purple. Like I said that's my $.02 worth.
