haha, It is frustrating when your competitive I must admit. I do get a bit upset if people over react though. We're all friends, we can just help each other.
I for 1 will marshal more than 1 heat if there isn't enough marshals out, but I didn't even know until after.
It does happen though. Someone just needs to pipe up who's in the heat before race starts I think. Most others are messing with cars, charging or smoking

so we don't tend to know whats happening outside of our race and marshal heat.
Theres plenty of us their who are more than willing to make it a better experience for all.
Feel free to bollock me if I don't marshal mine though