I teach kids how to sail small keelboats (18ft~), and now we need to make some upgrades to our fleet. Specifically, running rigging.
Our jib/genoa sheets aren't designed the way I would like. Until now, we've doubled up the lines and tied them together with an overhand bow, creating a loop with a snap shackle in the middle. They keep snagging on the standing rigging. Here's my plan, so far.
No hard/metal shackles (don't want any trips to the dentist)
Shackle must be permanent, or at least very hard to lose
Shackle must be easy to use, and no knots the kids can screw up
Preferably single, continuous lines, instead of two separate sheets. Less snagging. Also, kids lose stuff, and I'd prefer them to stick together
This leaves me with a soft shackle in the middle of a long sheet. What splice should be used? And how do I make the soft shackle stay there, and not fall off? Or is there some other way of doing this that haven't thought of?