i have been reading about this "phenomenon" for quite a while and feel i have just enough grasp on the subject to ask a proper question. my understanding is that every boat will be different, every boat will require a different ideal pressure, a good base pressure is 5#s to 7#s per 1K rmp, pressure should be around the same top and bottom in ideal circumstances, adjustments on these levels can be made with different types of shoes and loaders, and an inducer will alter any previous info that you feel was correct before its install. also a lake boat will usually be ok with a single tap at 3 or 9 o'clock and race applications have an upper and lower to pinpoint precise adjustments.
first is all this close to correct
second could i tap upper and lower ports, install gauges and do my adjustments, and then "Tee" the lines together for an average and run a single gauge on the dash just to keep tabs in a more relaxed setting opposed to the rigors of the test and tune?