The HP Plus aren't really track pads. but getting through 3 HPDEs on them indicates the brakes aren't being used very hard, especially with Road America in the list.
Klucius - As a novice myself (from Wausau btw), when it comes to HPDEs I will agree to the above point. The next time you do an HPDE, ask your instructor to give you a ride in their car. After 3-4 events in my Z06, I thought I was starting to "drive the car hard". Then my instructor took me for a ride in his Z06... and I realized I'm not even in the same area code as "driving the car hard".
However, I will say that I can see/feel the progress from one track day to another. My first few days my instructors were giving me very detailed information about hitting brake points, turn-in, apex, turn-out, etc. I was listening and trying to take it in, but it all seemed like a blur when I was on the track.
Your braking zone should start at the third crack on the left side of the road, where you see the grass growing up through the track.
Huh? What grass? What crack? I don't see them.
Don't worry you'll see it next lap. Ok at this turn, as soon as you feel the car hit the dip wait for the car to settle again then turn in, but not before.
What? I don't see a dip in the road....
That's ok, your doing well. You'll get it next lap... Now as you exit this turn, let the car unwind and take you right across the black patch of pavement.
Where? It's all black.
Don't worry it's a small patch - you'll see it next lap, but your apex was good there...
Continue this for another 8-10 times per lap and you get an idea of what the coaching is like around Road America when you have a great instructor in the car. But after more track days at RA, more of the necessary details became second nature. My mind was free to think about things other than not hitting a wall or taking an off road ride. I started to see that grass. I started to feel that little dip in the road. I found that black patch.
For me, nothing puts a smile on my face like being able to put that advice into application and knowing that I've made progess because I can actually use that advice and do the things they have coached me to do. When you really start to feel comfortable, you can use your tach as a report card at key corners (assuming your in the same gear every time at a given corner). In the morning you're taking the corner at 3700 RPM, and maybe by mid-afternoon your braking 4000 RPM in the same corner and ready to grab that next gear a little sooner. You don't even have to look at the speedo - more RPM is more speed.
The first time I noticed it at RA was between turn 6 and 7. I was starting to redline before 7 (3rd gear) and the instructor told me "You're hitting your marks better and carrying more speed through turn six, so now 3rd gear is holding you back at turn seven. So rather than maintaining speed and shifting after the corner, short shift and take 4th gear through the corner and build speed all the way down to the braking zone for 8."