I think the bat gang should convert your vertical momentum into horizontal momentum. That way, the loss of vertical lift is made up for, and you will be able to get even more crystals.
I found a bug. If your duck runs out of energy in the first race in a tournament, the game will bring you back to the screen where you choose the ducks to race and your other ducks' selections sprites will be that of the duck that ran out of energy, and if your duck runs out of energy in the second or third race, you will have to redo the previous race.
There should be an NPC duck with adjustable stats that you can race as many times as you want. I'm tired of entering old tournaments to see if my ducks are fast enough. + if you agree.