hook??

[colin scott]

is it best to keep your elbow down when throwing the left hook or should it be up high with forearm parallel to the floor or is this way just for close hooks i know most coaches teach the elbow up palm down way but when i watch most pros in a bout or on the heavy bag they usually got elbow down and forearm about 45 degree angle but i wasnt sure if it was just coz it was a longer range hook....just wanted to know what you guys think??? or how you guys were taught....