The wires on the Waves are not always the same when they come from the factory.., depending on the year.
Best way to measure rake is use your halyard and move forward to the bow and measure from the top of the mast to the bow. Then, holding that point, move aft and see where it would land on the stern.
That is typical in any boat to measure rake.

Slack is pretty slack. Stan Woodruff, one of the top sailors in the country, likes it so he can grab the leeward sidestay, turn it, and it will almost be perpendicular.
Rick