i know a few bounus promotions were your deposit 20 get 40 instant. And others like it. And you get the bounous money instant when you deposit. just you cant wthdraw is untill you play a few hands. I think this is what you are looking for. You get to use your bounus instant and play in big buy ins with it. I forget what sites these are but PM me and i will find it for you i got it stored in files some where.

It might even be on my site lol all go check.