OK
So one picks tops and another trades the middle ground after a change in trend has been confirmed, and before it tops/(bottoms) out.
6 of 1 and one-half a dozen of another ... so long as you've crunched the numbers, have a proven, definable (at least to yourself) EDGE with a System that you know has a positive expectancy ... at least until it is doesn't (the market proves otherwise).
In "hindsight" there was a helluva lot of divergence in the NASD and SPX before the Dow went for a tumble, and if you follow the Dow (or its derivatives) in relation to the SPX you've seen (know?) the elasticity the index has in comparison to its "big brother" (might have something to do with tracking 30 stocks vs. 500?), so that trade worked out (is still working) sweetly.
I say good for you Surf, whatever edge you have, continue to exploit it, use your averaging methodology to set it up so that the losers never loose to much, and do what most, if not almost all retail traders find extremely difficult to do ... trade the markets profitably.
Best,
Jimmy