Just got my boat and trying figure out the tack line for the spinnaker. The tack line’s bitter end starts in cockpit, then a frictionless ring at the tip on the sprit, then through a (temporary) loop on the pulpit, then back to luggage tag to sprit where the frictionless ring is attached. This gives me 2 to 1. My question is how am I to attach the tack of the asymmetric to the tack line. Should I have a soft shackle? Is the blue line strong enough to be the attachment? Thanks for the newbie advice.

Jeanneau Sun Odyssey 42. 2 for sale in Montenegro
I have a 2:1 code zero tackline, with a Harken high-load loop snatch block attached to the furling drum.