We're in the process of Hydrojecting greens. The Hydroject is what the name implies, a machine that injects water. It does so at very high pressure creating tiny holes that allow air and water to enter the soil profile. We try to do every green at least three times per year. You'll have to look very closely to find the pin-sized holes.
This is one of the cultural practices that have allowed us to not core aerate greens over the past 17 years (along with regular sand topdressing.) That is a phenomenal achievement, one that few experts would ever have believed.
I really like not having to core aerate as a Superintendent, because
Poa annua doesn't have a place to take hold. I like it as a golfer, because the greens are not torn up two or more times per year.
I hope you will be able to get out and enjoy it, we're one of the very few courses in the country that has been able to avoid regular core aeration!