I have my halyard come down the front of the mast after rounding a micro block on the forestay pigtail. There is another micro on the end of the halyard where I get a 2:1 purchase on the halyard via a jamb cleat with a pin. This gives me the ability to adjust the halyard tension easily while on the water.
Another thing to keep an eye out for is the seperation of the two hull haves along the top, back and bottom of the hulls. This was definately an issue on early boats, I don't know at what point this issue was resolved, if ever.