This is really a reply to the Konstanze Klosterhalfen post, but I make it new, because.
In skijumping the problem of athletes starving themselves led to good revenue, flying like birds, so to amend this starving a policy of the BMI was introduced, but it was not always regarded fair among the natural skinny, norwegian skijumpers stated they had to eat a lot to keep their weight above the legal 19 bmi.
So.
“We couldn’t find any solution that worked when you see the jumper as a human being, as a biological system.” Walter Hofer, Race Director for Ski Jumping at FIS.
The solution they eventually came up with was to allow any bodyweight, but reduce length of the ski (creating buoyance ), they did this in a very technichal and scientific way, but, anyhow:
Is adding shoeweight to the extreme lightweighters a way to go?