They sell tree stand skirts. They hide the lower half of your body when you are sitting down. They even sell tree stand blinds.
I have put a stand 10 ft in a tree before and killed a doe. I had plenty of branches and cover in the tree to hide me. If you can find a tree with low branches and maybe add this skirt to it you should be fine. And good luck introducing kids to hunting. Everybody should take a kid hunting at least once!
http://www.sportsmansguide.com/net/cb/cb.aspx?a=145774