Thanks for all of the good information! I definitely used your post in the Broomstick thread about the SCCA rules to better understand the requirements. Definitely more food for thought. While I do not plan to race in SCCA or NASA, rather local HPDE or possibly some GTA, I do want to be safe. I will mount the seat so it sits on the floor to be as low as possible and then once I have the windshield installed see what will work best. I want to explore what it would take to install a hoop around the windshield frame to see if that would work. Rather than drawings lines in PPT I should tie a string around the forward and aft hoops to get the real broomstick plane to see how far off I am.