I'm curious what other folks are using as filters for trading strategies to help "weed out" unproductive or loss-making trades. These would be add-ons to the strategy that help define trend such that entries/exits are high-graded. For example, if you are trading a strategy on the 5 minute timeframe maybe using a simple moving average filter on a higher timeframe to make sure trend is in your favor...say price on the 1hr chart is above/below the 20 ema. This is probably the simplest, yet productive filters I have used. I've been brainstorming to try to come up with additional filters but having some mental block. Curious if others are willing to share some creative filters?