Covering the student's eyes with your hands??? Putting the student in a headlock??? If you are actually serious, you have witnessed some seriously unsafe practices by a very stupid tandem instructor. Once I am under drogue and check my handles, I'll give the cameraman a thumbs up. Thats it for camera geeking. I do wear mirrored sunglasses. One thing I do like to do is grab the students wrists (so I have their hands under mine and in control) and bank them into a turn like an airplane. Looks pretty cool on video. Be safe up there!