Done 2 PDC's and have my own small garden on the outskirts of Amsterdam where I experiment with permie things. I am also involved with a small community garden, although the the main lesson I learned there is that people who are not really motivated by themselves are very hard to motivate. Intrinsic motivation is key for collaborative projects. I am currently looking for bigger projects and working on a concept plan for a trial garden of about 1-3 hectare which combines food forest ideas with bio-dynamics CSA farming.