Raising ~3/4 your stack as opposed to going all in.

[trumpman84]

Something I've noticed in multi table tournaments. Say you have a marginal hand in late position with 4 BB and its folded to you. Something like A6..you need to make a move. Is there any justification to raising 3 BB with the intention of pushing on any flop instead of pushing preflop?

Something I've noticed is that BB will call a LOT more often with bad cards when a short stack goes all-in as opposed to a big stack raising. I see BB call with hands such a T8o and 75s when a short stack goes all in and A6 is not a hand you want to risk all your chips on no matter what the BB would call with (except for A5, A4, T6, 76 etc.)

Just something I've noticed..any justification to it? Seems like it has two benefits....First, it makes the BB who calls all ins with any two lay down more often and two, it give you the added benefit of the BB maybe folding when you push on the flop if he didn't hit.