For those trading Currencies, this is my suggestion. You can decide for yourself.
First, try to always trade based on H4/D1 Timeframe trend direction. This is obviously common knowledge. Most people are trading M30/M15/M5. Some like to trade with the HTF trend, other rebels try to trade against the trend.
When you decide to trade COUNTERTREND (obviously not recommended).

Here is my suggestion. Throw a fib in there and wait for price to at least get to 61.8% or more before jumping in the trade.
If you get an RSI arrow even better, if not maybe wait for a colored candle to change in your direction.
If by any chance price never gets to 61.8% and leaves without you, you can at least be happy you were smart about the trade instead of just jumping in and possibly losing, like you would have in the 2nd chart trade.

When you are in the H4 trend, you would miss out on nice moves if you did the fib, so just use the regular signals for on Trend trades.


UPDATE:
There is one exception I forgot to mention.... If the trade is so close to your entry that it is worth the risk, and you can always put your SL to BE after price moves a bit in your favor.