I plan to add a cunningham to my Cat 30 TM with the control line lead back to the cockpit. There is a ganged turning block assembly for mainsheet, and boom vang with unused sheaves for bringing it back on the port side to a new cam cleat to be mounted on coach roof. I plan to use a spiral hook for connection through an eye above the tack. Rather than reinvent the wheel I thought I'd ask the community what setup works well in terms of line size, and purchase or number of tackle blocks used?