At 06:18 18 May 2020, 2G wrote:
On Sunday, May 17, 2020 at 6:20:53 PM UTC-7,
w=
rote:
Presumably, cable force has an upper bound of 80% to 200% of the glider
g=
ross weight (FAR 91.309).
=20

If that 80-200% is correct it could mean any weak link, for a 350kg glider
could be from 280 kg to 700kg breaking strain. Perhaps the lower figure
should be used for aero-tows, as it is sooo much safer. However I don't
know if weak links of less than 500kg are made.