July/August is mostly too late for D1s, because HA D1s go to watch you play in summer tournaments in June and early July, if they're interested. To get them interested, send emails now with measurables, SAT/GPA, video, and summer schedule; definitely do video the 60 on a football field and send that along with the other video. If you can get verifiable measurables early in the summer (I agree PBR is good) then you can send that before summer travel play, too. And, ask your summer travel team to reach out to coaches for you. If your coach is credible, then if they tell schools your measurables, that is also important. If D1 doesn't work, then D3 can happen at Headfirst/Showball in July or August; your son's measurables will stand out there. We decided only in mid-July that my son should go to August Headfirst - I was worried that there would not be spots, but it wasn't a problem, and it was as amazing as everyone says.