The WFTDA (Women's Flat Track Derby Association) is the governing body of the sport and sets the minimum skills. In fact, just a few years ago they upped the speed trials from 25/5 to 27/5 to make the sport more competitive. If anything, the WFTDA would rather they compete at the higher level. Some teams do not abide by the minimum skills, but that also means that if they get injured during a game, or anyone gets injured playing them (skills passed or not) the WFTDA insurance won't cover their medical bills. I run a tournament every year and make it mandatory that all skaters have passed their skills so no one else is at risk when skating. It's next to impossible to play the sport if you're not WFTDA compliant, and the other rule set (USARS) is all about speed so it's even worse for the ham planets.