David H. Lipman wrote:

I didn't have any idea, thanks.
how far from the bait this transiction is put?

The leader goes between the main fishing line and the lure. The
leader is always heavier test than the line. For example I use 40lb.
test leader on a pole with 17lb. test (Stren). The length of the
leader is a funtion of the pole length and the weight of the lure.
When I use a 2 ~ 2.25oz. spoon (Krocodile or Gator) on a 12' surf rod
I make the leader approx. 30 ~ 36 inches. I'll use a barrel swivel
to tie between the leader and the main line (17lb. Stren) and a snap
on the leader to connect to the lure. The leader has to loop knots,
one on each end where one is slightly larger than the other. The
smaller loop goes to the barrel swivel and the larger loop goes to a
snap. The main line (17lb. Stren) connects to the barrel swivel via
a palomar knot.

interesting.
in Italy and in all surf casting fishing and in Long Casting tournaments
we use also a strong line (about 0.60/0.80mm diameter) and we call
"shock leader" to connect the main line (0.20/0.35mm diameter) to the
rig set with big leads (3/6oz), you can see a sample here
http://www.pescainmare.com/newfoto/paternoster.JPG

but our shock leader is about 1,5 times the lenght of the road (usually
13') and the purpose is to receive the sudden and violent traction of a
ground or pendulum cast.
so, that I can't understand of your leader use is the purpose, being so
short.

--
ciao
Vittorix