you don't have to have a windmill in a fountain.
I had so much trouble understanding planes and people's descriptions totally baffled me.
what you could do is start off in a windmill and lower your arms (to which ever side the the poi is moving) then bring it in front of your legs to the other side of your body, and weave yourself up to a windmill again.
A poi teacher friend of mine calls it the square weave, as there are four corners to a square...
e.g. you weave the right hand side of the weave in the bottom left corner (in front of your legs).
The left hand side of the weave is spun in the top left corner, behind the shoulder.
Then pass it in front of your face, high above your head from the left side to the right (with or without the windmill - its up to you).
Then as you change to the right hand side of the weave, move it to the top right corner, behind your other shoulder.
as you change to do the left side of the weave, bring your arms down to the bottom left corner and drag the weave down low in front of your legs and beginning again.
Thinking of it as a square helps, but it has to be a smooth circular motion.
people describe this move differently and my bad for repeating stuff, but I think I've described it easy for the average joe. (with no talk of planes!)
I've also just compiled a
fountain video for the newbies
