These two examples show exactly the horrible rolling shutter wobble that David mention. You will have a horrible time stabilizing and tracking some of these, and the extreme distortion of the GoPro optic makes it a even more un-fun.
AE has a Rolling Shutter Repair effect, but i don't think it can compensate for these cases, only the usual pan shear distortion. Or? i havnt tried it myself on any of such footage actually, so i would love to be proven wrong about this.