Just mow the leaves. Many times. Turn them into mulch and leave scattered upon the earth, returning to the soil from whence they came. We seldom remove leaves from our customers property, and they are all pleased with the results. ...And the reduced labor bills.
If you are really resolved to harvesting the leaves, mow the grass with a circular pattern, discharge chute aimed at the focal point where you want the leaves to end up. In addition to probably being faster than a blower, you will be chewing up the leaves and reducing their volume and speeding up their degradation. Even if you end up wasting time driving around for additional passes keeping the chute pointed in the right direction, you'll save time, especially if you have a somewhat modern hydrostat mower. They back up quickly, and that keeps the chute going in the right direction and cleans up crumbs missed by the preceeding pass.