Fiberoptic cable length for 2 person snoot use

[DocTock]

I've tried snoot macro shots before with some (minimal) success and feel "aiming" the snoot is most of the battle for me.

On an upcoming trip I should have the ability to do repeated macro dives with super-helpful Indonesian dive guides.
I really appreciated the recent WaterPixels article about making your own fiberoptic cable.
What would be suggested for the optimum length for a fiberoptic cable for the snoot strobe aimed by an "assistant"?

Edited January 24 by DocTock

[TimG]

Pretty much as long as you like, Doc. What you don’t use immediately is easily just coiled up by your strobe assistant. Pick a length… 3 feet, 4 feet…. Much depends on the lens and subject and whether yiu want the assistant in the pic too! 

[Gudge]

I've been using one that is 2m long for years for this type of thing.  I've never felt the need for anything longer.

[FrancoisC]

I have done tests with 10 meters fiber without any noticeable change.

[DocTock]

Thank you everyone for your input.
4 meters of cable ordered - will try a 2m cable for the remotely held snoot/strobe.