Derek C wrote:
The consequence of using a 10% weaker link would be a greater chance
of a broken weak link and a failed launch, which might be hazardous in
itself under some circumstances.

No, never! A cable brake is routine and *never* hazardous in *any*
circumstances. If it is, then something in your operation is seriously
flawed.

But a cable brake (or weak link brake) is always an annoyance, as it
interrupts the operation.