The Greens Harvester from Johnny's actually works!
A couple of good green varieties: Magenta, Tropiciana (bolt tolerant!!), and Concept
Spacing of 1 x 1 on lettuce, brassicas is a-OK. Look at how beautiful this is!
Strawberries are beautiful but a big time and money suck. (Look at those hoops in the background! He has 22 hoops that are 26 x 96.)
Hoops are great for crops because it protects them from the night dew. Also keeps lettuce clean. I had such hoop-envy!
Finally - and this made a day with great info even more worthwhile. Chris plants white clover between his beds and uses a wheel hoe down the row and then mows it to keep a clean and easy-to-access corridor. This is an idea that we are going to utilize on our garlic fields/beds.