Yes right thrust does help in hover, but it sounds like you dont have enough tail athority.
I use to fly a sig se, and after seeing pics on here of guys hovering there se i thought it was me. Well I got a OMP 540 profile and on the 2nd tank i was hovering a ft off the deck! The tail has so much athority i can force it back into a hover from any angle.
The se was real touchy around center and once you got at 5 deg angle it didnt have enough athority to get back. I think thats the prob with hovering other planes.
Big control surfaces.......Lots of throw......Lots of fuel
hope this help