Why I 'love' Furled Leaders. Not that hard to make your own, but candidly I'd choose not to fool around. Two very reputable builders here in the West and they have them pre-made in both floating and sinking configurations. If you want something beyond the 'normal builds' they're most happy to accommodate. Only thing that's a 'must' in my opinion is the end of the leader have a 3mm ring to which you attach your tippet.Technically it isn't. But I believe it is still pretty close. You are still going to be messing around changing leaders for different situations rather than being able to do a quick fly change. Also you are using the aid of a sinking leader to get the fly down rather than just the weight of the fly, but I am not sure that is fudging much more than adding weight to the hook.
If you find fishing with sinking leaders pleasant you should do it even if it isn't technically dry line fishing. If your goal is true dry line fishing, you can use the poly leader set up as an intermediary step. I do believe you can use many of the same rod manipulations to get the fly deep and slow with these leaders as you would with a long mono leader.
(previously posted, for a tapered dry line leader)Does anyone have any dry line leader recipes.
I'd go longer on the FL and shorter on the tippet. As this is to be used on a 2hander these are built differently than those for a single hander rod. For all, http:// www.cutthroatfurledleaders.com/shop-cutthroat-furled-leaders/spey-switch-leaders.html builds FL's for speys and the 'who/why/what/when' info section is a very good read. (Close up the gap in the link above.)I mainly use an 11 ft. switch rod. I was thinking about using a 36" Cutthroat dredger leader with 6 ft. of fluorocarbon tippet. How do you think this would work for swinging flies at moderate depts.