You'll probably get a lot of flack, but dont let it bother you. I too, am trying to reduce the dependancy on chems as I can without sacrificing too much. I've been watching what the organic guys have been dooing and making notes. I think I can use some of their processes. Here's a video of what is called a "weed surfer" in the UK. I hope to put together some sort of my own like system someday. Maybe not this year, but hopefully next.

 That sort of system may not work for you, but it is a way of reducing herbicides, which is the point of posting it.