Not quite, sorta......

I've got a spinlock mounted on the front beam, underneath the tramp for the tack line. At the top of the spinlock I drilled a small hole to accept a piece of small diameter line, the other end of that line goes up through a grommet that is just behind where the halyard goes through a eyestrap. The line that is connected to the spinlock has a ring on the other end of it which the halyard also runs through. When I pull the halyard from the tramp, it unlockes it from the cleat on the mast, and also opens the spinlock releasing the tack line.

Next time you see Robbie's Viper, I copied his setup.