I'm not even sure why people use spike aerators, don't they just push down the soil down, creating a hole? that's just like compressing your soil, don't see any benefits of this, or I could be wrong. Definitely go core aeration if your doing over-seeding, or just use a slit-seeding machine.
Gauvreau Property Maintenance
Commercial & Residential asphalt services
Interlock & Landscape
Complete lawn care services