The Double Uni Knot with a twist.

   

        
Here is the Double Uni Knot with a slight twist, for all those anglers that want to try salmon fly fishing with a trout fly rod here is a great fishing cast / tippet that incorporates a running dropper on a tapered leader. Firstly i tie a tapered leader using 15lb breaking strain line tied to a 10lb breaking strain line with a double uni knot and then i tie a double over hand loop knot dropper and place it above the double uni knot that joined the two lines and loop it in place. The knot on the tapered lines will be the stopper for the dropper but it can slide back up the line towards the sink tip or fly line, this is a very handy system if using a net because the dropper will move up if it gets stuck or the main fly gets stuck which gives you time to react unlike a fixed dropper which will break off or even worse break the main line. In summer i use a small size 12 Wickhams Fancy or Thunder and Lightening trout fly as my dropper because i have found that salmon will take the smaller fly first before taking the shrimp pattern especially in the late evenings. I have used this system for many years incorporating it with 6ft ( salmon ) sink tips,  6ft intermediate  tips and tapered leaders. If using this system with a 6ft ( salmon ) sink tip i would use a 6 ft tippet tied in two 3 ft sections with the double uni knot again tapering the tippet down to 10lbs from 15lbs using either mono or flurocarbon, then putting the dropper on the top 3ft section above the double uni knot. When using a ( salmon ) 6ft sink tip i would never use a tippet more than 6ft long because then the fly's are fishing higher in the water column than the sink tip but when using  6ft ( salmon ) intermediate tips or tapered leaders you can extent out to one and a half times the rods length in total ( length of tip and tippet combined ) for better turn over and depth presentation. If using a 6ft ( salmon ) intermediate tip i would use a tippet of 6ft of 15lb line tied to  3ft of 10lb line thus giving you a better roll out and cast, they will fish better as the fly's have more life especially in slow pools.. If using a 10ft rod the ( salmon ) intermediate tip can be 6ft and using a 9ft tippet  (6ft of 15lb tied to 3ft of 10lb line) the total lenght is 15ft which is one and a half times the length of the 10ft rod but you can fish a little shorter if you wish it all depends what you length of tip and tippet you are comfortable with but i have found great success in these precise lengths. Having used this dropper system with both single hand and switch rods i haven't had any issues with casting or presentation but as with all fishing you must always check your  fly cast every few minutes just to make sure that they are all fishing well and not knotted up.