Which GRP single-seater has the lowest cockpit weight?

The mother of a teenage flight club member made a polstered cushion with
plummet sheets inside. They say it weights 20 kg (about 40lbs). It was
hard for the boy to carry it to the plane, but he managed it. He
additionally needs the Ballast Weights near the pedals.

Andreas

Maciek schrieb:
PW-5 - 121 lbs
A friend of mine, who had similar problem, used to carry a little bag filled
with sand (made by her mother;-), which placed under her...you know where,
added some extra lbs (even 20 ). One thing you should do if you use this
solution is to make sure, that the sand never gets out into the cockpit - it
may cause seizing of some mechanisms and it can end badly. Better if you
raplace sand with some stones (less comfortable, but more safety)

Maciek