How do leaves/petals float?

FH is worried that the silk leaves we have to throw after the ceremony will only fly up (ie in the face of the thrower) and not sprinkle over us the way rice would.

Anyone who has done this (or been at a wedding where it was done) please weigh in!! Do petals work better than leaves?

Also what's the best way to distribute the leaves/petals???
Do 'cones' help propel them? I was thinking of just having the BMs pass baskets with the leaves/petal for guests to grab, but I'm not sure how that will work.

TIA!!!