I just started riding Dancer, although I've had her for almost two years now. She stands great for mounting, but I'm short, fat and seriously lacking muscle (too much time at a desk in my little cubicle) in my legs, so even a mounting block isn't quite tall enough at the moment - I have to resort to a picnic table. The video has some excellent ideas to get Dancer to line up. She's not resistant at all, she just doesn't know what I'm asking her to do, so - with the tips in the video, I just may be able to get her to line up at the mounting block/table/spot without having to have any help with her.
(And - don't be embarassed about size. You've seen the pic of me on Dancer. Now that's bad! And that was after losing 50 pounds!)