Wheelie

hey.. ive been riding BMX bikes for a long time now and i finally got wheelies down but i cant get any distance on them i can do them really high so i can fall off but i just cant get it to move with keeping the wheel up. please help  

practise..  

keep on practasing and when you feel yourself falling backwords stop pedaling

if you start falling to the front pedal faster hope i helpd  

what about mono's??

any advice??