tremolo

i know how to do tremolo, having watched the uke minute about it, and i know as with most things it mainly just needs to be practiced, but does anyone have any general tips on how to do it more easily or learn it more quickly? *i know there are multiple versions, so for reference, i've been attempting the one aldrine recommends where you sort of anchor with your middle finger on the faceplate and use your thumb(nail) for the tremolo. if you prefer a different method, feel free to recommend it.

I like the 1,2,3 method. Thumb is 1, middle finger is 2, first finger is 3 and you simply play 1,2,3,1,2,3... The thumb plays bass notes and is also acts as a filler to give a smooth continuous sound. I'm still working on the version that uses 3 fingers and a thumb.

Heres a vid I made of doing it... http://www.youtube.com/watch?v=qG1M4E9ryA8

As for the one finger style as I have no nails I find it easiest to kind of anchor with the thumb palm of my hand, stiffen up my hand, use my first finger and vibrate my hand up and down. It works really well for me.