Double Spreader Rig Tune - note the #'s

we've run an O30 with a variety of forestay lengths ranging from 37'-2" to 37'-10" based on conditions, mast butt position and sails we were using. in the lighter breeze we went with the longer forestay set-up using the #1. as breeze increased up to 11-13 knots we shorten the forestay length (approx. 1.5-2 inches) and tighten the lowers (2-3 half turns), still carrying the #1, length adjusted, again based on sea state and sail design as well as crew weight (we generally sailed with a crew weight of 980-1022 lbs.) with 13-15 knots and the #2 up we make minor increases in the adjustments. when we were in #3 conditions we began to lengthen the forestay to max. length and increase cap shroud tension and lowers 2-3 half turns again.we used 19 as a base on the cap shrouds and would dial down to 17 and up to 22 for our area and conditions. the lowers were in a range of 12-14 for our base setting and we would drop down to 10 and up to 15 but always focusing on keeping the mast straight with the lowers.we originally set up the boat with our full team hikinh, sailing upwind in 12 knots of breeze, with the backstay on 80%, making sure the uppers were snug and tensioning the lowers to keep the mast straight while giving the boat 3-4 degrees of weather helm by adjusting the forestay.this boat has an original single spreader rig with double spreader configuration. these numbers seemed to work in one design and phrf.