As has been already said, this topic has been dragged around almost as many times as "what is folk music". IMHO, it depends a lot on what you choose to call a sing. Going around a large circle while each person does the song of his/her choice, while the others there - mostly also experienced (if not 'good') singers - sing along with the choruses or the whole song is wonderful...and I envy you people on the watery sides of the country who have that opportunity (this is why we try to get to the Getaway every couple of years). On the other hand, some places are lucky to be able to get eight or ten people together who want to sing, much less who know all the words or are able to carry a tune. This is the crowd that RUS was designed for - and 75% of those who attend the song-circle here would be mute without it.