If you have a very heavy and very stable outboard arm pod, and if the turntable is also weighted down, and if both are supported on the same perfectly flat and very stable surface, then it can be made to work and hold the alignment, as Banquo and others have done.
But it is NOT really a great idea to isolate the tonearm pivot point from the turntable, I and others maintain. There is a case to be made that the tonearm at its pivot must move in unison with the bearing and platter, in response to spurious external stimuli (a large truck passing by, an airplane flying low, a big fat guy walking around on the floor above), because the stylus will read any difference in motion between the two as a signal that will be overlaid onto the audio signal. Such a phenomenon is not desireable. The reason that a set-up such as the one I describe above can work well is precisely because it does favor coupling.
But it is NOT really a great idea to isolate the tonearm pivot point from the turntable, I and others maintain. There is a case to be made that the tonearm at its pivot must move in unison with the bearing and platter, in response to spurious external stimuli (a large truck passing by, an airplane flying low, a big fat guy walking around on the floor above), because the stylus will read any difference in motion between the two as a signal that will be overlaid onto the audio signal. Such a phenomenon is not desireable. The reason that a set-up such as the one I describe above can work well is precisely because it does favor coupling.