*A linear conundrum *

**Lead core, lead free, shock, sinking braid, fluorocarbon … leaders, the list goes on, but how long should a leader be asks ***Carppuzzle*?

I have scoured many carp magazines for a definitive answer but it has eluded me. There is plenty about what material to use, where and when but not length.

Then I found an Adam Penning video for Prologic’s Last Meter Bulldozer K Braided Shock Leader, having watched it I was none the wiser, but I had an “in” – @AskPenners, so I tweeted:

And back came the answer:

This sounded like a question from my daughter’s school maths exam! Not to be put off I set about solving the equation.

The drop is from the rod tip to the rig? Yes? Okay a constant at 6ft.

Then add the reel turns, 12ft, on the basis the reel retrieval, ‘*R*‘, is approximately 0.9m per turn on *Sonik Tournos 8000*, but this is a variable correct? So we now have 6 *+ 4R*.

Then don’t forget the rod tip to the reel seat, 10ft for a twelve foot rod, in my case *Sonik S3*, variable again. Therefore rod length *L – b, *butt section, another variable. Now we have *6 + 4R + (L-b)*.

I calculated 28ft, with my variables of reel retrieval and rod length, and as I was on the train commuting I guesstimated 30ft would do for must people but wanted clarification so tweeted:

And back can he answer:

But I don’t think that is the case. Just take the rod variable *L*, you could have 9ft or 13ft, and reel gearing and spool circumference will effect *R*. Or does Adam mean it’s the same set up (equation) on any rod?

Therefore does 6 *+ 4R + (L-b) *apply in all cases?

Yes, I think so, but rather like the *Links Effect *it comes down to personal preference, and what about other variables; should depth of water be a consideration?

I’m now guilty of over complicating things with too much mathematics. But I am keen to use a strong leader having been cut off before Nutcracker Sweet just have to decide which and how long.

Back to school then.

Tightleaders [lines]!

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