>I don't know that this is actually a documented fact, but it's pretty well understood that if a group of guys goes out, it's the married guy that's going to get all the play, while the single guys try to feast on the scraps. Best to just accept it and hope that the girls have hot friends (often the case, thankfully!)
Tell me about it. I frequently go rock-climbing on weekends at a large cliff 2 hours from here, where the Alpine Club has a campsite etc. For these trips, I generally pick up climbing partner(s) at the camp/cliff, and they are invariably female. The single guy climbers just stare on in disbelief. Sometimes the girls too, when I sadly pass on my marital status mid-way up the cliff (climbers don't wear rings, due to the danger of losing digits were they to catch on something).
This weekend I'm flying to Irvine CA, for work, and had to pass on an offer to help out with nine new female climbers visiting that cliff. Bummer.. but it's supposedly going to rain there all weekend anyway, so no great loss.
As an aside, this particular climber's camp is on a lake, with a beachfront sauna. The gals nearly always outnumber the guys in there after dark, and climbers generally have, well.. nice bods.
Cheers