Thanks, Claud.
I follow many of the same principals here, although I haven't completely won the dock eradication war yet.
I haven't used a tiller yet, but I bought one last fall so that may change. My walkways are grass that I clip and use as mulch before it sets seed, and I have a lot of flowers to attract good bugs and birds. Sparrows are some of my greatest garden helpers, but they don't seem to be able to stomach the squash bugs. I can't really blame them...yuck!
I had only one nasturtium germinate last year, and it didn't show up until the season was almost over. I'll keep trying though...