Unless you have a very expensive camera and a huge zoom it is very difficult to stop camera wobble. Even with a tripod it’s difficult. Hand held on a moving object, unless you have movie grade cameras, is nigh impossible, especially if you are excited by the sighting.
Why can’t anybody hold a camera still? I can video tape a plane without it going all over the place. The only people to video tape these sightings are the people that can’t hold their arm still? I belive but damn….why can’t we get good footage?