There are regular testy discussions between pilots because the VFR guys have no idea what the IFR guys are talking about when they give their calls about interecptiing the outbound radial, or conducting the missed approach route.
When you are on a see and avoid lookout, it helps if you have an idea as to where you should be looking for IFR aircraft.
According to one R Smith, you don't need a radio, so keep them eyes peeled.