Dealing with short cylinder targets

I posted this into the Unity section of the forums but it might make more sense being here.

I'm wanting to use a cylinder target for tracking an object - but the cylinder is quite short; shaped like this:

It only has a texture on the side - so when I try and and set this up as a Vuforia Cylinder target, the side image comes out super pixelated. This means that it can't be tracked well at all. The image I put into Vuforia was 18316 x 700 but Vuforia processing brings it down to 512 x 16. 

Is there any tips or tricks would be helpful in setting this up as a good cylinder target that will allow for more detail? Are we able to split up cylinder targets to half-cylinders to maximize the marker detail? Worst case scenario I can try using lots of image targets to make up the cylinder but I'd imagine the stability wouldn't be as good.