I have been looking for what would seem to be a simple indicator already out there but can't find it. I want to use it to help with my back testing.

I am looking for hash lines a user select-able distance above the recent highest high and below the recent lowest low to show where a trailing stop of "x" ticks would be.

Anyone seen this out there? Or know what I could modify to work?

There is a Chandelier Stop here, but it does not use a fixed offset. It uses the volatility of the prior N bars to adjust the stop.

https://nexusfi.com/download/ninjatrader-7/indicators/1411-download.html?view

This indicator could be modified (simplified) to use a fixed instead of the variable offset, which is volatility based. Also you can simply use a large period N (for example 256), then it will behave like an indicator with a fixed stop. If you select a period larger than 256, please set "MaximumLookBack" to "Infinite".