I know. You just can't please everybody.
Of the several speed events I've run; Perky, Clown, Fox 35, and Sportsman Stunt Speed, the Sportsman Speed event has drawn the most average entries.
The "unlimited" Fox 35 Speed event has averaged only 4.5 entries and a mountain of comments. So in 2018 I enforce the rule and take the heat from those who liked the 10%.