On the Stealth so far I have:

- Top patch on the spi to spi halyard (I spliced a loop on the halyard end). It used to be a taped knot, this is faster to tie/untie.
- Attaching the hardware for the jib to the spi pole. I have a full length jib, all the way down to the pole. I have a block on the pole for the tack line and a cleat for the halyard. I only put this hardware on when I sail duo.
- Boom to main sheet blocks. This is a long one, it acts as a pigtail. It lowered my top block and allowed me to remove some length of mainsheet

I also use a variant where I finish a line with a soft shackle. Just make a loop like a bury loop, but don't bury, make a knot instead. Pass the loop over the knot to close. I use those on the spi tack and the jib sheet pigtails.