You could also consider tankering from your last fuel stop as much fuel into BDV as possible (within weight limits, of course). Fuel at BDV tends to be more expensive than many of the refueling points on the way. The more you can land with at BDV the less you'll need to buy there...
As a rule of thumb you should tanker fuel any time the next refueling point is significantly more expensive than the current fueling point. The reverse also applies: Just enough fuel bought expensively to get to the next & cheaper refueling place. Make sure you anticipate diversions/weather/etc & don't leave yourself short!
Last edited by Tinstaafl; 3rd Nov 2012 at 22:32.