Re: What to do if a shroud or stay breaks
You might consider building in some redundancy. I just installed an inner forestay with running backstays that serve as a lower, independent triangular structure. Aside from that, PCP's reply about using spare halyards is the usual first response to a broken shroud or stay. After that, you can always make a quick repair by making an eye with a small compression tool. Having some spare Dyneema onboard is a good idea in order to use lashing to secure stuff. If a mast comes down, it may want to put a hole in the boat but I would think hard before just cutting it free. If you can get it secured, you can use it to jury-rig something to get you home. Carrying spare wire, turnbuckles, swageless ends, a come-along, copper compression sleeves, and sail mending materials may get you home avoiding the need to call for help.
Alberg 35: With a philosophical flourish Cato throws himself upon his sword; I quietly take to the ship.