So, how did the Elves exactly ride without a bridle?

[Peter_20]

I fail to understand why on earth the Elves were riding around without even using a bridle.
Sure, I can see they rode bare-back and all, but riding without a bridle must've looked kinda hilarious.
I mean, where exactly do they put their hands?
Do they just sit upright, or do they hold their hands round the neck of the horse, or do they just lean forward?

[Rían]

Prob. lean down and put them on either side of the horses's neck or withers when they're moving fast, and just do whatever they want with them when they're just walking.