Green’s Dictionary of Slang

shoofty adj.²

(Aus.) dishonest.

1962		J. Wynnum Tar Dust 15: ‘Trouble with you is you’ve been working too many shoofty moves during your [...] shore time’.
1981		P. Radley Jack Rivers & Me 22: [T]hat would be shoofty, wouldn’t? more sugary tha shoofty, take my word for it.

In derivatives

shooftiness (n.)

dishonesty, cunning.

1981

P. Radley Jack Rivers & Me 113: [D]riven crazy to shooftiness by Connie.