Originally Posted by RainDog
Not sure I believe that. I have sailed in winds well over 30 knots and not noticed significant stretch on my halyard. Based on empirical evidence, I do not think strong winds put a large load on the halyard on my boat.
Yes; it will. Ever try flattening your mainsail while close-hauled in 30kts? It's difficult to do on our boat with 5:1 purchase and a 2-speed winch; so I'm sure the vertical load on the boom is several thousand pounds. This force is countered by the halyard so it sees as much vertical load as the boom.
Please note there are several types of line with names being used interchangeably here:
Samson XLS Extra (Could be same as Extra T; but check Samson website)
Samson XLS Extra T (Highest strength version of Samson XLS; blended core of MPF/Dyneema)
N.E. Sta-Set X - Parallel Core; cover has red "X" tracers