Unsure of the terms here, but currently the only way to make the mouseover scan vertically instead of horizontally is by inverting the chart. This however inverts the Highstock navigator as well, making the chart I need vertical mouseover scan for look strange compared to the other charts on my site. The solution suggested by highsoft support is to make a second chart which resembles the navigator , but is too time-expensive to impement on every chart on my site..

So, I either wish for an option to flip the mouseover scan without inverting the chart, or an option to place the navigator on what ever side of the chart I please,

Example: https://jsfiddle.net/n7r9yzsu/