turning from the rails & tail

i went out yesterday and just watched people surf for about 4 hours, dissecting everything they did. i noticed some guys only turned using their rails, and some only from the tail of their board. is one better or more efficient than the other? i'm learning to do both, but don't want to develope any bad habits that will be hard to shake later on.
also, when turning from the rail, is it better to lean way into the turn and use your hips or to just put one foot off-center in the direction you want to go?
also, when turning from the rail, is it better to lean way into the turn and use your hips or to just put one foot off-center in the direction you want to go?