I don't normally take more than 75 unless I'm doing high cap over a cv which in that case my point is irrelevent sorry for confusing you butcher............I do try to manage my fuel but sometimes I just screw it all up oh and thanks for the AV gas there HT I had no idea it was lighter than regular gallons or whatever the word I'm looking for................

Best advice I can offer, is talk to some of the veteran pilots who fly strictly one or two planes, these guys can tell you the fuel loads, for aircrafts - for example I almost never take drop tanks - not in the main arena unless I am doing some kind of mission.
For High capping a CV, i'd climb to 17k for example - throttle back bit time to cruise speed (assuming they come in from 7-14k) - gives you plenty of loiter time and allows you to conserve fuel, when you throttle open and dive you can pick up your speed to make attacks.
Really it comes down to experience, everyone has their own deal - I for example rather take 100% in a 38 (far to much if you ask me) but really I like to climb out to 15k (no DT means no drag on climb rate or speed) - I burn up a good portion of gas just probing the situation and picking my tagets out, when I get down in gas I can furball. (Please 38 pilots dont slap me)