Originally Posted by
Capn Bloggs
... for those complaining about having to slow down when high, have a look at your best holding altitudes. Get down, get slow and save fuel...
Yeah ... but no. Not when you are losing time enroute (as opposed to losing time at a fixed location). We don't cruise to our destination at our best holding height and speed. Descending to our best holding altitude (enroute to the destination) will help you lose time, but it won't save you fuel.