I will be heading in next week.  I am planning on doing some base camping in the Lake Two area.  I realize that this is a busier area, so I have a question.  Most of the time I see people hurrying to get somewhere, and it seems people do not stop to say hi or talk.  I think that people do not want to intrude on others experience.  But, this trip I am going to try and be a little more open, slow down and talk to others.  I do not want to intrude, so is there a way to let others know, 'hey come on over and talk'?  I have read about pink flimengos, or flags and was wondering is there any established sign for 'stop by'.