Is it true that one can find cheap boat trips from LA to Hawaii?

I have heard rumors of cargo ships and things of this nature, taking passengers who bring their own food and water, to the islands for as low as a 100 bucks, which is bad ass. lol

Is there any truth to this?, Is I suppose my first question.

second. Where can I find these ships?

and third. If any one has done this. What was your experience?

thanks every one for your answers. :D