Carolyn,
My method is to fill at least one garbage can a day until I'm finished, more it time allows. I use large garbage cans to move debris to the compost heap. I have to look at what has been done rather than what needs to be done.
I spread compost on my gardens 2 years ago and it must not have gotten hot enough because there are weeds growing like crazy. Maybe it was so fertile, that when things got neglected the weed seeds went wild. I'm going to give preen a try when I get things cleaned up. I use a garden fork to loosen then get on my hands and knees.
My problem is so many rainy days and seems like I have to go out on nice days. Good luck!