I go really slow and I noticed two things, a) people run into the back of me and usually knock their own RC over and b) I was able to drive around a lot of accidents
One person did tell me that I hit the wall way to much at the end of the strait but it's hard to see with the marshall standing in the way, I need to learn how to use my brakes much better.
UEMaxx a Hitec 645 is relatively inexpensive.