Just a word from a SAR geezer- in the old days when I was active, we routinely responded to vague situations, not knowing circumstances, or indeed, if there was an actual emergency or just someone a trifle late.
Today with cell phones and gadgets like the InReach, it is totally different. If you ever need the capabilities of these devices in communicating your problem and your location, resolution of your difficulty will e advanced by hours, if not days. The money expended on your subscription will shrink to insignificance.
Still, leave information of your plans with someone responsible when you embark....
one or more gifts or other benefits from the co-op.