If by "parrel beads" you mean the collar that's attached to the tack of the sail, it's meant to go around your furled headsail.
The tack line leads from there to the block/padeye you mention, and ideally back to the cockpit so you can adjust tack height from there. Lower the tack as your apparent wind angle gets narrower, and generally raise it as you bear away.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)