I mean they’re harvesting food I bet sales can cover ladders and fuel and whatnot. If you’re short on workers ask literally any other non-profit if they wouldn’t like half a ton of apples to make pie with for one of their projects, you’ll get your workers. Have a general “pluck two get one” policy for anyone who is not a business, no other questions asked.

Basically all that’s necessary is to have someone responsible for organising stuff, the economics are trivial as we’re literally talking about distributing stuff for free.