I know one guy who got a reup bonus of $1000 on a $10,000 deposit. But maybe that is because he lost about $25,000 over a 4 month span before that.
He had a telephone betting account and arranged it over the phone or he was going to deposit somewhere else. I think that he had his account up to about $51,000 at one time, before going like 0-6 one night and losing $31000. He then went back and forth for a few weeks and then lost it all.