Suggestion by someone else, i see it works, but i see 1 weak point
Allow rate race ONLY for ppl who finish race
example:
very hard but VERY GOOD hydra race,
everyone who finish it, likes it
n00bs rate it bad coz can't finish
so 3 likes (ppl finished race and really enjoyed)
and unfair 7 dislikes (n00bs who couldn't finish it, and unfairly rate it bad)
so imo /like or /dislike should be available only if you finish current race