I read the article in the April/May 2002 issue about morel mushrooms. I am crazy about finding them and have my secret spots, too.
Here's how to increase the odds of growing morel mushrooms in your own back yard: Submerge a batch of morels in a pan of water with a plate on top and place the pan in the refrigerator. After a few hours, take the pan to your back yard (or other "secret spot") and pour the water around a tree. The idea is that the soaking water now contains tiny morel spores. Twice after having done this, I had yellow morels grow in my suburban yard, miles from the woods.