Replying to Help! My brothers are turning into gapers!!

I hate gapers and I can't tell you how many times I've almost crashed into one. Last season I noticed my little brothers only did straight airs and 50/50 fun boxes and they also cut the groups off that are waiting to hit the jumps and sometimes sit in the landings. Whenever I bring it up they say there only 12 and don't care what I think because I don't know what I'm talking about but I've gotten an earful from the park crew about them and I've covered for them for a while and I don't know what to do. I'm concerned they may be turning into gapers and I need some advice before it's to late.