i feel if you do not have a reference to pull out for and turn in for the gate you will never reproduce your start. it needs to be in relation to the buoys and the boat. where these points are is up to the line length and your style. i know of a guy who once missed the gate at regionals because he was timing his pull out in practice by a canoe on shore. they moved the canoe over night and while waiting for it he skied well past any point he was able to make a gate. my advice, pull out when the ski platform passes the pre gate, go to the width of 2 4 6 and look back at the front of the boat. for -15 go when the platform is at the gate, -22 gate between engine box and back of boat, -28 at engine box, -32 at windshield, -35 nose of boat, -38 nose but width is two feet inside line of 2 4 6.