Before you start drilling, you need to take a look at how the tack line works on The Infusions - really slick. it can be set up so that there can be multiple release points around the tramp. I have one at each rear corner so that i can release going either way through the gate and there is one middle of tramp so that the crew can release it too.
i first used the two line system when we had tramp mounted spinny bags on the iF20s, it allowed us to do drops with the crew on the windward side of the boat. That always gave us an advatage at the leeward mark.

Paul
GBR 7