Roughly as an educated guess - go with the next kite size up, or go with a bigger board. If you put 30kg of lead on them, then go the next size up board and kite.sergei Scotland wrote: ↑Tue Aug 07, 2018 9:49 pmSure, absolutely agreed. No one can find all the variables. A bit like big models (like climate models for example).
Put it this way - if I put on 20 kg of lead weight on the same 75 kg boarder - what should increase in board and kite size be (the same kite and board make/variant)? Roughly as an educated guess?
The second biggest problem you face is that your kite quiver is likely spaced in 2m increments of flat area. And you really need to understand what "flat area" is and it's relationship to "projected" area. So............you just go up a size and ride it. Boards are extremely complicated from a mathematical point of view. And what you need to understand about a "bigger board" is that you apply rail pressure from the same lever arm (your foot size) in all board sizes/widths. So essentially, with a slightly larger board (width is most important), you have to use a different equation. Or you just ride the board a bit different and then any comparison goes right out the window.
The biggest problem you have, and please let me say I do not intend to insult you with this (I am serious), is that your question is not tackling a problem facing kitesurfers on modern kites.
And no, this is not a stupid question. It is one of the best on this forum in a while. Many kiters wonder about this same thing at some stage in their kite skill development. This is a great question that sparked debate and yielded an answer that you may not have wanted, but that answer is simply the reality of the situation.