Kudos to you on making the decision to wear a HNR!
Also, consider arm restraints while you're at it. An extra $25 per person to keep your arms from being torn off or amputated later is pretty good insurance in an open top/removable top car. I have a spare set for the passenger/instructor. All tethers are very short, except driver's left side, which is slightly longer to allow hand signals. Sure, it takes an extra 1 minute before the session starts to get them hooked into the harness system, but that's reasonable.
2014 Stalker XL, #22
"If the car feels like it is on rails, you are probably driving too slow." -Ross Bentley