Do you plan to aerate and sow seed this fall? Will you be forced to do it for the first time? Does aeration prepare an adequate seed bed? Should you apply the seed before or after aeration? (Remember if you apply the seed first, many of the cores will fall on top of the seed--resulting in good seed-to-soil contact). I used a 3/4 inch soil probe and "aerated" to a measured depth. Four holes for each depth. 6 inches apart. And then put a pinch of seed into each hole. (Scotts "High Traffic", (high in Silverdollar perennial rye). I used 1-inch, 2-inch, 3-inch, 4-inch, and 5-inch deep holes. Weather is 88 today, but the area is irrigated. 10 minutes with spray head--every day. Soil sandy. What do you expect the results to be? Stay tuned. I then calculated the area seeded. If I had used a spacing of 3 inches, I found I would punch 16 holes per sqft, and I calculated the area at about 0.44 sq inches per hole. That is 4.9 percent (about 5 percent) of the area would be holes. Sounds like only 1 seed in twenty would fall in a hole. Thinking about other methods to try.