By involving a variety of people, you can free section leaders to do their important work with their young members. We had three leaders in our troop last year. No one was able to attend all our meetings but, between us, we usually fielded two adults for every troop night. Recognize the contribution of our volunteers. So often, it takes little more than a card, note, phone call, or handshake to keep a volunteer going.
Recognition is the key word.
Leaders can have youth members make a thank you card or poster for members of the group committee. An awards night or leader appreciation evening is a nice way to end the year. You don't need to organize elaborate events or spend large sums of money to be effective. Annual service pins and long service awards are available through your regional office. The Scout Shop sells an amazing array of awards, rewards, and memorabilia.