So I tried using hover lately and felt it was really weird. You aim and then slowly fall. Why use it?
But then I learned that you can actually double jump DURING hover, and can float slowly upwards.
The ability also has a definite duration but you can space this out by aiming in and out, so you can use this to move with better precision and timing.
The duration also resets with your double jump, so wall running gives you full hover ability.
So pair this with a grapple, and you can basically hug the ceiling. Grapple wall, double jump release grapple, wall run, jump, hover, double jump, (this allows grapple to cool down), grapple wall again, wall run, repeat.
No one ever looks up!