Electrical tape. I use the cheap stuff. Wrap everything. ALL RING-DINGS MUST BE TAPED. About three wraps around the swages on the stays to protect the mast, the forestay adjuster, the side stay adjusters under the vinyl covers, anything that you find that is sharp. Swimming expeditions usually happen unexpectedly.
Maybe a couple of pieces of modern super strength 1/8" line. It's amazing what you can tie back together.
What I end up loaning to people is a mast erecting pin (with a big tag on like a gas station washroom key), and a thin wall socket to adjust your rudder engagement. You can buy an expensive one from Snap-On or grind down a cheapish one. A really cheap one will break, I know it's not helpful for me not to tell you what size but mine, of course, has the markings ground off
. You might try 5/16", everything else is, so ....
Great boat isn't it?