I am a soccer coach and would like a simple white board app that will let me have perhaps a template of the soccer field layout (that remains static). Then have the capabilities to do white board like activities onto that template. Such as drawing up positions (X's and O's) and drawing lines to indicate routes or circles to indicate zones....then I can do a simple erase to start over, but my template of the soccer field layout remains. Any such apps out there? Thanks in advance.