Someone please correct me if I am wrong,

But as I recall the weak link is supposed break before it carries twice
the gross weight of the glider.
So during the launch the wings must lift at a maximum the weight of the
glider plus up to 2 times weight of the glider through the weak link.
So the maximum load you should be able to put on the glider is 3G's.

I don't think I would want to fly a glider that could not withstand
3G's.

Brian