in zero wind i can get a pretty solid hover going, if that's what you're asking. if you're asking about hands off hover, probably 4sec before the heli moves (so ~3sec before correction is required to stay solid). my solid hovers average of 20% of my overall hovering hours, whether it's my laziness, the wind, or whatever. my 5-10mph mph wind hovers usually are within 6-12". wandering is much less stressful, but solid feels like a zen thing when it happens with a micro (haven't flown larger helis yet, but i'm sure they're a lot easier to hover).

i find that not focusing too hard on a particular part of the heli helps me stay solid. if i accidentally gaze at the shaft, i loose reference with the ground, and i start to wander. it takes more of a conscious effort on my part to get in to the "solid hover" groove, but when i do fall in the groove, i usually find myself gazing somewhere between the ground and the heli, looking through the rotor disc. kind of feels like the difference between driving while staring at the lines in the road, versus driving looking ahead at the "big picture". high/distant hovers are still a problem for me.

could be a servo going bad.

-kev