When you mean shaking arrows, was the bear climbing the stand??? This is actually the right way to start the bear deterant phase, bears cant see worth a fly covered in cow crap so they use their curriosity gets the best of them. I have had bears climb up my ladder stand and the best thing to do is tap them on the nose with an arrow, theyll get the picture that theres a human there and climb back down and go about their business. (self experienced). Also the spine shot is an excellent shot, most hunters dont take this shot though do to the narrow area that one has to hit. The first deer I ever shot with a bow was in the spine. I tell ya what, if youve never seen a deer go down fast well theres no better way to drop a deer right where it stands than with a spine shot. Although the spine shot is lethal, its not one that is practiced much by any hunter. If you do happen to take an animal in the spine be prepared for a follow up shot in the vitals. As for the rifle hunt out of a jeep, this is a type of safari hunt that is very popular in that region of the world, especially when persuing large dangerous game. Everyone here and anyone in the world who hunts, all have their own ways of doing things, although we may not all agree with that style, thats how they were taught or that is the way its done in certain areas. We are all one big family no matter how we hunt, excluding the WHA. The WHA are just a bunch of idiots.