I'm always asking questions so thought I'd contribute something I found works quite well and is quite reliable.
It's not new - it's RSI 8 divergence, and it's on the GBPUSD M1 chart - see below.
Look for lower lows or similar lows in price, but higher lows on the RSI (in a down trend) - vice-versa for long trends.
Then trade in opposite direction to the trend.
The best signals seem to come from when the RSI first reaches above/below 30/70 mark, then fails to reach the second time.
These are countertrend trades, so keep a close eye on them. However, often they are good for 10 pips or more.
TRO: Anyway of coding this into an indicator with your amazing coding skills?
Cheers,
Alex