Not sure I followed all that, but what I see on p12 of the Viper Tuning Guide seems essentially similar to what I think I'm seeing on Gill's boat -



If I'm not mistaken, I think the red handle on the tramp is attached to the small line connected to the spinlock on the rear of the main beam that you mention - which I think is the same as what the Infusion has.

The separate tack line seems reasonable to me.