I just finished the install of the BWY kit for halyards aft - with changes. I purchased the 3 cleat/clutch kit but am only using two at the time - third in reserve for later single line reefing or downhaul.
Instead of adding the double horizontal block in front of the single block that turns the dagger board line to the aft, I replace the single block with the double block since the bolt spacing was the same. I figure I can add the single block on top of the double later since the double vertical block at the mast is aimed at this location.
I also installed the cleats/clutches (Spinlock calls the PXR line cleats, BWY sells them as clutches) differently. BWY recommends to locate these on the side deck 12 inches in front of the starboard winch. I really did not want these in the middle of where we walk, especially with up to three lines fanning across the side deck. Also, I consider the one weakness of these cleats that they can open if bumped into. Instead, I installed them directly in front of the winch next to the existing dagger board cleat. I made a wood cored fiberglass layup for the mounting block (did not have a small piece of Starboard) - this bolts to the deck with three #10 machine screws. I also rigged the dagger board with a block for a 2 to 1 lifting ratio to make pulling up the dagger board easier. End result is pretty robust with a minimal footprint and relatively protected from someone bumping into them. The halyard cleat/clutch is also located to feed onto the winch if needed.
A third cleat/clutch could go between the two or on the deck immediately to the right.
I also installed a smaller Spinlock PXR for the foresail roller furler line on the port side.
Now, I can access all the lines I need to from the helm (two genoa sheets, roller furler, and dagger board - do not see the reason yet on the main halyard except possibly in an emergency).