Maya Live will not help you here as it does not track 3d objects it only MATCH-MOVES cameras. Something like 3D Equalizer does have this ability, but only in moving camera shots with plenty of parallax. Without that depth info a computer is not intelligent inough to work it out.
I am affraid you will have to do it by eye. But fear not, as it is not as nasty as you think. You are absolutely right, you will have a very noisy rotoscoped object. This is for 2 reasons. 1) Fcurve interpolation and 2) not enough visual info to follow.
The way to get a rock solid roto is...now this may sound painful, but it really ain't, believe me I have done a lot of this for big movies, and it works just dandy :
Firstly, beware of the interpolation. Check for silly peaks in fcurves, and try keying at every 5 frames for maybe 20 frames, and keep scrubbing baclk and forth to see where the interpolation has messed up. Don't be surpeised if to get it accurate you have to keyframe every frame for a spurts of 10 frames or so a time.
2) Now, how to make it accurate and avoid noise : ...well...this is dependant on your visual reference. If there are patterns or fine detail on your object in the image, draw these things on as splines at frame one. Shape as necessary...does not have to be accurate, is merely reference. Do the same with edges and ridges of the object. Set these up in layers so you can colour em and make em very visible...eg bright white or red.
Now you have so much more detail to aid your tracking, the result will be a rock-solid track. The more references you have, the more you have to match the position with. Curves are great for this sort of thing. You will need to pay a lot of attention to detail constantly scrubbing back and forth between frames to look for any slipping. In big productions it is necessary for this to be accurate to within a couple of pixels, but for home use or most tv stuff, a lot won't show up on screen. Watch the fcurves for obvious noise and where possible try smoothing it by eye without damaging your hard work.
...ok so its a very painful process, but thats that. If you want to kick a football, you have to walk to it and kick it. Well same applies here. Manual method when you have no depth info.
Hope thats helpful to ya
Pootang