Love the trapping pics. In MI trapping early it can be very difficult to see the birds. We don't get leaves off the trees till late Oct.
While we do have some open farm land that makes it easier to see the birds, I find them much more likely to bump than the industrial park birds. I agree on the industrial park birds for early season, also don't discount landfills. They seem to attract birds and generally have easy places to serve a trap. One of my best birds was trapped at the land fill near home.
I have also had luck spotting by doing freeway driving in areas where there are roads next to the freeway. One person drives, one watches. The driver is responsible for hitting the location on the GPS, the spotter for targeting identifiable structures to locate the bird once we get off the freeway. You put on some miles with this method, but it has produced sightings on those days when tooling around all the above locations is coming up short, or that mid-day dead time when you can't seem to find anything.