Windplayer, the 3x profile flying does take a bit of practise, it took me a while in real life to master it but once you do it is a real buzz as your now using gravity and effectively energy management all the way down with minimal power.

You can use your altimeter to check against distance (say DME or GPS) so you should see the altimeter unwind at @ 330 ft every nautical mile of distance, so 1000 ft = 3 nm, once you can visualise that it should work a lot easier again just adjusting your rate of descent up or down to keep the altitude and distance in agreement all the way down.

I would just practice descents for a while to get the hang of the 3x profile but once you do only way to go.

Ansett and TAA used to use a 4x profile for the 727 but that is for another day.