Aack. This seems to have turned into something of a tempest, which is not my intent. I assure you, Simonov, I intend no personal insult or dis on your friend Verdi. For all I know, he is indeed the future mayor of Palm Springs. And your loyalty to your friend certainly speaks well of you. May we all have such friends .... But. I do stand by my basic assertion: it's hazardous-to-foolhardy to organize a (very) large hike on Skyline without having personal knowledge of the hiking abilities of the people who are going to hike with you. I do not think this hike is wise without having a very strong structure (i.e. the hyper-organized Sierra Club hikes, which have team leaders, assistants, sweeps, and radios.) Having personally seen so many sick, dehydrated, and confused people on Skyline, I just don't see it as at all unlikely that in a large group of Skyline newbies, at least one person may prove not up to the task. And living here in Palm Springs, we witness up close the seemingly never-ending rescues--watching the helicopters fly over the mountain, etc. Is it really so odd or misanthropic if some of us express strong concern? I also have loyalty to my friends, and some of them are rangers/SAR folks. I don't want to see these people hurt for no good reason.
Here, in a nutshell, is what I (continue to) believe is the correct procedure: 1. If people are interested in doing Skyline, take them on an initial hike to 4,500 feet. If they manage this without any bonking or major problems, then, and only then, take a second trip all the way. Never take anyone up Skyline you haven't hiked with before. 2. Make sure that they are closely supervised, and don't take more people than you can physically keep an eye on. I don't think one person can really supervise more than three or four novice Skyline hikers. Let alone 33. 3. Be ready and willing to turn back if someone proves unable to keep up, and don't leave any stragglers behind, even if they do have a radio. Finally, I would even say that would-be Skyliners ought to spend a day (at least) acclimating to the heat and dryness before they attempt this hike, instead of the "we'll just drive there at two in the morning to save on hotel costs" method, which delivers exhausted, sleep-deprived people from cool coastal climes directly into hot desert climbs ....not a good plan, IMHO.
The point here is that bad as it is to be injured, sick, or dead, it's much worse to be responsible for somebody else being injured, sick, or dead. On Skyline, err on the side of caution. One can always come back and hike it on a better day. As Cy always says "The mountain's not going anywhere!"
And on that note, may we all continue to enjoy it peacefully...

Q: How many therapists does it take to screw in a light bulb? A: Only one, but the light bulb has to want to change ...