I'm not sure what it would take or if it is too late for this season but our sport is suffering from the users of loud aftermarket exhaust systems, my thought is if we could find an artist or designer who could come up with a nice drawing or picture with the red circle and a line through it that conveys the message that loud exhaust systems are not welcome. They could be made in the form of a sticker or a poster and given to any business willing to display it. I am not saying that anybody take any action on the issue but simply display the signs. Of course business owners do reserve the right to refuse service to anyone they like but law enforcement is best left to the authorities and they have higher priorities but it seems to me that loud exhausts are threatening many trails.