Have an BMX / Skateboard competition event to see who can pop a wheelie the longest. Set up different age group competitions. Give out trophies and cash prizes. Do it at South Common or one of the skate parks around Lowell.. Maybe bring in a DJ and some food trucks.
It would be a fun positive event for our youth and could attract a big crowd of participants and fans. This could include advance materials and safety tips to show where it’s safe and positive to practice bike tricks (and discourage practicing bike tricks on busy streets).