kicking

When I first started of riding I would raise my heel so I can nudge her with my heel to get her going... as I realised what I was doing I would try to maintain a long leg and just do a nudge using the inside of my boots which would work on her as she's a forward going mare who loves to please...

So I am currently in the process of selling my horse/taking him to his new home. He loads onto anything absolutely fine, however once loaded he will begin to panic. After a while he will start to settle just in the trailer without the back up, but as soon as anything goes up behind him, he goes...