1/4 turn mounting plates for glass hood

I used to only run 2 hood pins in the front (regular hood pins, not the kind you have), now I use 3. A couple of years ago a spectator approached me after a run and told me that my hood was lifting in the center of the hood at the end of the track. I said thanks and paid little attention to it. The following week I saw a pic of my car at half track (1/8 mile)...it was scary....the hood was probably 4-5 inches up in the front center. I now have 3 pins across the front, 1 on each side and 2 in the back and it is much more stable.

With the type of fastener you have, I would do at least 4 across the front.