Here's my 2 cents:
1) I think simply trading a retracement based on a specific measurement (Fibs, Sup/Res, SMA/EMA, etc.) is not good enough because it you can't apply one rule to all situations. From my experience, depending on how strongly/weakly the market is trending, it will retrace more or less. You need to take that into account to some extent. When the trend is very strong, the price may barely retrace, forming an almost horizontal flag at the top/bottom (where a fixed measurement would miss the move). When the trend is very weak, the price may retrace 100% (where a fixed measurement will probably get stopped out if you use a conservative R/R ratio).
I like to use a 20EMA as a reference level and then also look at the slope of the moving average. Based on how steep it is, you can adjust the retracement estimate.
Fib levels are also useful, along with recent support and resistance levels. But again, you can't use them blindly. They're only reference points.
2) This brings me to the dilemma that you brought up: should one wait for confirmation before entering? It is a good question because without confirmation, you will probably get stopped out often. On the other hand, waiting for a confirmation often raises the R/R ratio to an unacceptable level. In my opinion, you have to try to find a compromise as best you can. Here are some suggestions:
- Maybe wait for the market to simply stall instead of resuming the trend.
- Watch the TICK (if applicable) and see if it will give you a tip.
- Watch Level 2 and see if you can spot the rotation.
- Watch multiple related instruments (if applicable) and see if one confirms another.
Again, there is no secret to this and in some cases, you will miss trades or get stopped out but there is value in trying to find confirmation.
I would love to hear others' opinions on this interesting topic.
