Thanks all, especially Peter Frank
All the foilers I know are strapped, and the one without is a racer (Evan). So nobody to copy-cat
I have studied my footage (where this was a screen-shot out of), and indeed what PF says seems to make the most sense!
Indeed if I go upwind I move my COG to the front, and when going downwind (as on my picture) I move more aft.
So it would make sense to move your feet a bit strapless, as I do on my wave-board as well when riding on different courses relative to the wind.
I have the 2016 pocket board, where I reference the middle of all the strap inserts.
There I place my feet. Maybe this does not match the 2014 Makaira any-more?
But better to stop learning with a bad stance, so next time I will try to place my rear foot more to the rear!
Unfortunately 5°C this morning, whereas the moment I took the picture it was 14°C at the beach last week.
And to make things worse: hale stones come down regularly, fast amounts of rain and a strong, but unsteady wind
I guess I have to wait for better weather, hopefully next week.
Peter Frank: your mast looks longer, which one did you have?