I tried to recoup 0.05BTC that I lost. I ended up losing 0.07 more on bitcoin. That was pretty much all the bitcoins I had so I've never gambled since.
I wanted to do the same once, I deposited 0.2BTC (was worth around $50 at the moment), and I wanted to go all in. I don't know how but I managed to get back 0.25BTC, I withdrew and never deposited again since. Bad decision to take, you can risk all of it so easy...