(sorry about the different name)
Without a joystick it's going to be tough. I would go to game/options/ and use the pull down to set auto brake If I were you.
I use a throttle slider on the joystick, it works very well. It took a little bit to learn, but my lap times got better by at least 25% I honestly can't think of racing without throttle now.
My time dropped from 1:19 to down in the 50 second range on crazy '98
I can see how running a drag you would need ultimate control. Teetering on ramps you need to be able to control the rig, I can't see be able to do that with a throttle that stays on.
The auto brake should work ok for you tho
