You could hang onto them through June, in case someone sees your offer here. But then release them in July so others can use them.
Your situation is really quite common. People invite their friends to do an epic hike, and it all sounds like a really good idea. But then when reality settles in, thinking about the time to train, expense and equipment procurement, the time and expense to go on the trip -- people bail left and right.
That is why there are no slots available for people to hike, but at the end of the day, there are still available unused permits due to the no-shows.
