Something I have been curious about, how to jury-rig a mast, is explained well in this excellent video. In my opinion it’s definitely worth the 15 minute view. It includes some cool tips, especially the shackle detail.
Speaking of shackles, I noticed the other day while trying to reproduce the trick I just mentioned that the two shackles we used to secure our Genoa turning blocks are both bent. I never noticed it when I last removed them because they were lashed on to the cleats and the blocks that they held had integral snap shackles, meaning that I didn’t need to unscrew the pins to unfasten them. You think maybe there was a “bit” of force on them? I guess we need to use larger shackles next time we rig that sail!