Crit as a classic American-style, criterium might be the best option, i.e.: – Have the crit run for a “set time + a 3 lap countdown” for the different categories – The winner being the first person to cross the line at the finish – Have a “crowd preme” wherein a hat (literally) is sent around the crowd at the start race and during the first 1/3-1/2 of the race to garner crowd funds for a ~mid-race preme that will be announced by a bell. The crowd can choose to give as much as they find the race entertaining, to be honest. – Of course, it is the racers responsibility to keep a ear out for the preme bell, just as it is their responsibility to keep their eye out for lap counts/bell lap.