Inner Sight - keep missing proc

Seems rather hard to track this proc for no apparent reason. We have the purple marker on the kill target, any chance we could get something over the rogues head to show when it procs? I’m finding that I’m wasting so many procs because I’m just not catching it. Am I missing something basic (entirely possible) or should I just switch to combo points specialization due to my lack of awareness?

You can see the proc on the blue energy globe, which has a bubbly glow when inner sight procs and you have resource free skills.

Yeah, I see that occasionally but am not making a point of focusing on it cause it changes so much. I will try harder. Seems to be a learn to play issue for me then. Appreciate the reply