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Some observations regarding exit decisions:
1. Strong Dominant trend moves often start right off the Open. Thus, trending moves that start from dull markets or from chop are more likely to mean revert.
2. The ability to enter in a fast market with low confirmation is an advantage that few have. This should be taken advantage of via re-entries.
3. The extent of the swing before loss of momentum indicates whether the move is likely to continue or reverse. The rubber band being stretched metaphor can be applied to short swings. But once a move goes a certain distance, it reflects a shifting of the value level. There is low probability of mean reversion. After a certain point, the rubber band actually loses tension on being stretched even more.
4. The exit on parabolic and re-enter routine is easier during the first legs of a trend. The last few legs of a trend are 'glacial' - consisting of periods of congestion before continuation. Thus, sit through deeper retracements during later stages, while taking advantage of early uncertainty by being nimble in exiting and re-entering.