This man speaketh the truth.
Myself and my best mate Mark often do trackdays together, and it'll be a mix of Impreza, 911, MX5 and Caterham. No matter what he's driving, if I passenger with him then I can only do a few laps before I have to get out, else I'll barf all over his interior. By his own admission he's far from a smooth driver, quick but very abrupt with his inputs, and it makes for a horrible ride. Not just me that has that issue, other friends of ours who have been out with both of us (often in the same vehicle) make the same comment. I'm much smoother so they'll happily pax with me, and Mark's binary input driving means they tend not to stay out with him for very long.
I would imagine that it's your own inputs that are causing the car to move around far too much and upsetting your brain, and making you feel sick. There's no easy cure apart from practice, but that along with the medicine should help. I wouldn't bother doing any upgrades to 'cure' this just yet, until you'll done at least one more TD (airfield if you want, as it's cheaper) and taken some tuition.
Definitely get a CG Lock though, I use one in all my vehicles as they're brilliant and for £35, you can't go wrong.
Exactly this!! ^^^^
You will also save on brakes and fuel etc with better driving style. Look at Greekman, a set of discs and pads last him a day or two, I can get 5 tracks sessions on mine. Don't get me wrong he drives pretty fast but he has very minor sympathy towards the vehicle and passengers lol
Cheers for the advice
Got some coilovers sat in my garage waiting to go on when i manage to find the time. Also have a sparco harness bar and a pair of scroth harness's winging there way to me as we speak Hopefully when fitted these should help keep me planted in the car then it's just down to me to learn to drive smoother