Hey i know its not mandatory, but even with base maps, they can be a mile off, and i witnessed this only last week From what i was told from a few people that map them, there easy to work with so a base map isnt nessecary to get going. BUT i understand what your wanting with the forum, again hints and tips go a long way when it comes to this type of stuff. That i will sign up for later when i get home and have time.