As of right now, there is no reason what so ever to do a bonus more than once if you're not a top tier surfer, which most of us aren't.
So my suggestion is to fix wrcps and wrbs to give 50 points and 2-10 give 20 or 25 points.
Which would give incentive to get a decent rank on stages and bonuses.
Just a suggestion so people would have incentive to improve their stage and bonus ranks.