I'm trying to set up some remarketing lists in Adwords and I'd like to target people who've been on my site for over 15 seconds.
The problem is that I am sending traffic to single-page landing pages, so people will watch the video on the page, scroll through the content and then click the back arrow, giving me (if I'm correct) a bounce and 0 time for the session.
Do I need to create custom events that fire when somebody clicks anything on the page, or scrolls past 100 pixels on the page? Will that allow Google to log the session duration when they ultimately click the back arrow?