I developed a cool technique for doing the right handed squeelers without moving your fingers further down the pick or adjusting your pick.
If you imaginge the pick simply hitting the string parallel to it and perpindiclurly lined up. you just rotate you pick hitted action to that the pick isnt hitting the string at the precise point your supposed to.. Its really hard to explain.. nevermind. Just dont move your fingers down the pick, rotate the pick and angle you hit the strings, i duno anyone else who does it. It means you can squeel whenever you want!

Torby