i took my ul-1 out second time last night and fliped it. by the time i brought it her back she was already missing a fin...you know the two fins that stand up on top of the back of the boat....so off to my local hobby shop i went and bought another pair for $22....My questions did i really need to have those fins....she sort of looks cool without the fins.....what do you guys know and what do you think..thanks