My wife and I have talked about using one of our weeks of vacation to "Will Work for Knowledge" but life keeps smacking us in the face. We now have three acres and are our own 5, 10 , 15 yr plan (1st year has been VERY busy).
From the podcast it sounds as if they did try different things, but for them as a family, it works out better just to work on garden.org and keep the farm up and running just for themselves.
Dave & Trish, you guys really are an inspirations to others in both large and small areas of knowledge.