Thats the way I learned by hoping up and down but I managed to stop doign that becase after a while I didnt need too. I guess whatever way you choose to learn you end up with the same result.
id prefer to start off with the correct way becos then the style will always be ther... if you start off fakie by hopping ur back wheel then you mite keep doing it as bk said cos thats the easier alternative but it doesnt look good at all
when you get into it make sure that you 180 straight. you dont want to land sideways or anything. i know cause it used to happen to me. also make sure that you dont hit the brake when riding fakie. bad things can happen.