Another things that wrecks your spinnaker really quickly is any scrags of wire on your fore stay eyelet swage.
When they swage it, they intentionally leave it poking out about 1-2mm of the copper swage so you can see if the swage is failing, but when the spinnaker gets wrapped around it it chew 5cm splits into the sail. A bit of PVC or electrical tape does the trick.
I never leave swages with nasty sharp wires sticking out of them. It hurts like hell when you pprick your thumb on them, not to mention ripping sails or chaffing sheets. If a swage is done properly it will never let go; the most common mode of failure is where the strands of the wire break off adjacent to the swage. Protruding wires from a swage serve no useful purpose.
When I do swaging at home I either make sure the short end is inside the swage so there are no protruding wires, or if that is not practical and there are protruding wires after swaging, I cut them off with an angle grinder.
That requires a good eye and a steady hand, because if you accidentally nick the wire on the other side, you have to start again. The trick is to cut almost, but not quite through the last strands, then they will easily break off. I have done it dozens of times and have only nicked a wire once.
