ive found that for kids who like to sit with their board on the coping of a ramp for 5 minutes while they try to find the perfect time to drop in, even tho they just bailed their last varial kickflip body varial right before they threw thier board back on the coping, a well placed bs ollie, as close to the offenders face as possible, will teach them to not do that. for those who like to sit on ramps or boxes or shit, i like to tell them that the playground is on the other side of the fence.
i do my best to not hurt them, or thier precious little feelings. i made a kid cry the other day tho. some 15 year old kid in girl jeans... he ran up the ramp as i was mid ollie, and i had to kick my board out to not hurt him too bad. board hit him and i fell and hurt myself. told him to watch where the fuck he was going and rode of. he went to the other side of the park and pouted for at least an hour, but never got in the way again.