Happy to share one of the few truly useful things I know.
It might also help to remind your DH that there are people volunteering to fill such positions all over the country every day, and 99.99% of them do not EVER get sued. A hold harmless agreement, good adult supervision of kids, and a little common sense protects you from darn near all exposure.
Think about if you were on a jury. What would it take for you to find against someone in those particular group-leading shoes? Pretty obviously heinous and irresponsible behavior, right? So just don't do that and you'll be fine.
(Plus have everybody sign the hold harmless! I think the current leader's laissez faire attitude is a mistake, too, FWIW.)
Let us know what you decide. I'm watching with interest!
