Answer:
Use me if you really want to see inside someone
I help boats park
I am rarely touched but often held. If you are smart you'll use me well. What am I?
What can be drawn but never taken?
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.