One thing that I like about MMAs is that you can make the actual price chart invisible and still see what's going on:

That chart should really give you an idea of how the two groups play off of each other. You can also see how reversals in the short term group are marked by the shortest term average getting too far away from the rest of the group (Guppy calls those areas bubbles). Then the long term group tends to exert a gravitational pull of sorts.

As long as the long term group is showing a strong trend it's generally pretty easy to find good reward/risk trades. You just wait for the short term group to try to push its way through the long term group, then trade in the direction of the long term group once the short term group begins to get repelled. Alternately, you could make trades against the long term trend once the short term group becomes 'bubblicious'. Those bubble areas are also places to take and/or protect profits.

P.S. Here's an article that I just found by Darryl Guppy -- The Guppy Multiple Moving Average