Valtteri, can you clarify what you are asking for - do you want data on existing superwing weights from current owners to gauge variance and change over time, or are you looking for production data from the extruder?
Best solution would be that manufacturer measures them, somebody should be doing that quality control wise anyway. If that's not possible then data from every boat measured should be made available somehow. That way people could be making their decisions based on real data.
