I use the trend time to estimate a trend pivot. Its not pin point accurate but most of the time its pretty close. I use 1 to 1 and 1.618. From the data I gathered, most of the time; primary wave will be 1 to 1 ratio to the first wave length and retrace pivot to the end goes typically 1.618. I color coded an example on the charts and you can test and test it out for yourselves. It's a underrated tool and many don't use for some reason, but it's there for a reason and it helps a lot. No price action goes up or down for ever. This fib time trend tool can help you figure out its pivot or exhaustion point for a trade set.