My only concern with hiking so many people in is the number of catholes to be dug. With 60-100 people, that's a big impact.
That's still true for the walk-in site at Coe, right? But at least it's only for one night.
As far as the money goes, are those fundraising websites easy to to set up?
I think it would be better to raise the money beforehand rather try to collect it during the event. Collecting money from a large group is no fun. Set a target amount and raise that from whoever is willing to pay. As long as the dollar figure is met, nobody cares who has or hasn't paid.
I would just set the dollar amount higher than anticipated to cover contingencies and then bring any leftover balance in beer.
Ken(s) - Maybe you could delegate this chore to someone so you guys don't have to do everything.
Speaking of money and trips, do I owe you (Ken T.) money from the last Trinity trip?