One of the more interesting mails I received noted that Hobie changes the Shroud and Forestay length after '82. My Hobie 16 is a '79.
Yes, in 1982 the shrouds got shorter and the forestay got longer. We shortened the shrouds again in 1995 to sync up with the Hobie 17 wires which were fractions different. We also ('82) angled the step casting aft for better mast rake ability.
Current 16 Wires (measured pin to pin / where clevis pins would rest against the inside of the thimbles)
Forestay 17' 6" (Was 17' 3/4" before 1982)
Shroud 18' 11" (Was 19' 2 1/2" before 1982)
Current wires require an extra extender (10 hole adjuster) on forestay to get full mast rake. You should be able to rig the boat with the shrouds and forestay on top holes of their adjusters.
The 16 sails best with the mast as far aft as possible. With what-ever blocks you have, rake the mast aft till the blocks nearly touch when fully sheeted. The bows will ride higher and the boat will point higher. The boat will pitch pole much more easily if the mast is forward.