If you pick them too early, the size hardly makes them worth the effort. However, I found some small morels that were already off their stem and developing a secondary fungal infection. I think smaller morels hold up better in the frig and don't crumble like the older ones. I guess I pick morels as long as their 2-3 inches tall. I do have a spore bag. When I drive by thousands of acres or woodland, I wonder how many morels are in there and I know that although there are more hunters out there, the majority of woodland is not hunted.