Bad Time to Bully ??

[therock]

This has happened to me twice in the last week. PS $15 turbo. Big blind = 600.

UG Me - 6000 chips with J,8 off or very similar
Button - 3000
SB - 700 after posting the 300 chip SB
BB - 3000

Both times I pushed pre-flop and was called by the SB with a marginal hand that was better than mine (Q,4) (K,2). I think this would work a lot better if the SB had already folded pre-flop or was on the button. Needless to say, I got the short stack right back into the tournament. Is it better to just fold this pre-flop?