I was wondering.. is it possible for a remote viewer to remote view by himself without any instruments or other technology but the remote viewer and a pencil and paper?
Actually, that is the way it is usually done these days. However, the system was originally designed to use both a viewer and a monitor. The monitor is there to watch the viewer and keep him/her in proper structure, to note when the viewer goes into imagination mode, etc. The monitor is not there to monitor what the viewer FINDS, but to monitor what the viewer DOES and make note of it. After the session, both the monitor's and the viewer's information are sent to an analyst.
That's the ideal situation. Now that the military project has been disbanded, most viewers are left to work alone. It can be done, but doesn't make for as dependable results. It also makes for a generally harder and less pleasant session, as the viewer has to be his/her own monitor. Quite often, the monitor is only there as a sort of security blanket for the viewer, and during those times when the viewer is feeling lost or confused, not having a monitor there can be quite unsettling.
In short, if you have the opportunity to have a monitor, do so.
I have one word of caution, though, if you can't get a trained monitor who knows what he/she is doing, it is often better to have no monitor at all. If you train your own monitor, the best thing to do is to begin by training them to give you the coordinates and then just sit there and keep quiet.