Hauling, Rod-loading.

Lastly, tension is the force which allows fly casting to function at
all. Tension is what keeps the line in the air. that it also explains
why a haul works as it does, and the ideal casting stroke has not
hitherto been explored.

TL
MC

Using Newtons;

The newton is the unit of force derived in the SI system; it is equal
to the amount of force required to give a mass of one kilogram an
acceleration of one metre per second squared. Algebraically:

1N = 1kg*m/s²

To describe the force on the rod tip is also correct.

TL
MC

This incidentally also demonstrates why a cast with slack at any point
fails, and why the point of tension release ( conversion to momentum),
is of such paramount importance.

A smooth steadily accelerating cast, with the line under steadily
increasing tension, gives the best cast. A haul adds tension, and
increases rod tip speed.

Quite a few ramifications actually, I am presently graphing the
information, and trying to propgram a range of simulations to which I
may ad actual data from various rods, lines etc.

TL
MC