"...sometimes the thought crosses the mind of being a nuisance with unnecessary calls....."
Depends on your point of view as to what unnecessary is. We at BRS have a LARS freq to deal with those who are passing by, regardless of type or flight rules, we have much experience of dealing with micros/gliders/balloons etc etc and it is much, much easier for us (particularly the person vectoring our commercial tfc and IFR trainers) if you call us and we know where you are, since all our IFR traffic transits through class G airspace to get to us.
My advice is call anyway, if the unit has no traffic to affect then so be it, but believe me, it's no fun vectoring a 757 or summat similar round the sky cos there's some loon winding their merry way through our final approach without talking to us. Also bear in mind that in some parts of the country (like here in Zummerset) there is quite a bit of v. fast moving military tfc on the go. You might be glad of the service we provide.