Thank you JeromeL and IrieJohn for your help,
Don't own a board yet, I want to solve the pad/strap issue first.
My feet are quite narrow, and long (obviously).
At my kite school, I could not put my feet in Fone straps (foot too wide, I think the pad was also too short).
Bare foot was quite perfect in H1 Cab, so-so with 3mm boots. With boots on, I am a bit afraid of potential failure bc of minimal velcro attachment. Cabrinha website states that H1s are designed for EUR49 size, which makes me quite confident though - they are cheap too).
Thanks for the Naish and North suggestions.
Just curious, what is your foot size? Could your bindings accommodate 1 inch longer feet?
Will update if something new and worth sharing.
(Jerome: I did not ask on french forums. I prefer english/international forums in general, as there are more people, more brands, more diversity and less "joutes verbales" or "prises de têtes 'sémantiques' ". They are just much better.