How to use ReticleLine on objects that aren't DistantHandGrabInteractables

I'm following this tutorial on creating ghost line reticles:

https://developer.oculus.com/documentation/unity/unity-isdk-create-ghost-reticles/#ghost-line

The ReticleLine works great with objects setup for Distant Hand Grab Interactables - is there a way to use this for objects that aren't grabbable?

e.g I'd like to use the ReticleLine behaviour to detect hover on game objects but not include any grabbable behaviour.

Thanks!