Well , as a carp Angler Such as yourself Someone like myself would think you would appreciate the Simplicity of this answer LOL .
I use this method for a couple of reasons , and they are as fallows:
I love the sheer strength of power pro , it is one of the best Super Lines I have ever tried , But it's Limpness of the braid as a hair is NOT what I am looking for.
I love the stiffness of Mono or Flouro , BUT when it comes to the Hook sizes I use ( owner size 2 , 4 , 6, and VMC size 4 ) the eyes on the hooks are ever so small and 30# mono or Flouro will not fit into them.
As I do NOT fish for Trophy Sized Carp in the wild , Some of my Methods , Means and ways Differ from the "EUROLISTIC" was that most Internet Carp Anglers Use. As A good Friend and mentor Coined the phrase , I am A "EURO LAKER". My Waters are very "Snaggy" and we have an abundant amount of sharp Jagged Rocks and what not , thus why I use heavier pound test lines. I prefer 65 Lb Power pro for My Leader's. So with that said I hope I fully Explained myself and was to the point , Any other questions , Please feel free to shoot me an E-mail or just stop by my site/forum. I am BY NO means An Expert , NOR do I claim to be , So Please remember this , BUT I am always Willing to learn.
many thanks ,
Just a point of curiosity, why use a separate piece of mono (or any other type of line for that matter) for the hair loop when you can either tie a loop at the end of the hook tag or double the hook tag over and accomplish the same thing, with fewer pieces of line to hold in place? ** Speaking as someone with the same manual dexterity as a monkey wearing boxing gloves **
There is no greater fisherman than "the guy here yesterday."