You say broadcast it by hand, do you mean with flinging the seed from your hand or using a bradcast seeder. If you need a small broadcasr seeded you can get one for $10. at home depot . If you are alreadyu using try making your overlap a little farther and walk a little faster, see how this works out. I have seeded many lawns with a broadcast seeder and had to figure out the rhythm as to what worked best then I was ok with it.