[python] Python Seat and ergonomics

Hi everybody,

I am planning to build my first python (I think I will do it this spring,
I'm starting designing it at this moment).

There are plenty of good "studies" on the wiki and on different websites
(Pivot angle, PSI,...), but I didn't found anything about the seat.
I think this is very important to have a comfortable and efficient position,
in order to avoid things like back pain, injuries,...

I don't really know which kind of seat would be appropriated to a python
(torso-legs angle, one-piece -which kind of shape- or back+ shoulders, is a
Head-rest necessary,...).

I hope someone has pieces of info about these points.

Regards,
Nico (France, Nord)

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