Approach
I believe it might be a problem in the approach. It is no good setting up a slot on a low stake and spinning away for ages, losing is a certainty. The best way to extract value for money is to enter the promotions. With 50k to spend you could have made quite a stir at Jackpot Factory.
I would recommend the occasional deposit/wager race tournaments. These work on the principle of $50 deposit wagered once gives one point. A payout of $500 earns 10 bonus points (once per game per day). With $50k to spare you could have won pretty much all the time.
I have done an "expected value" calculation and all the tournaments of this type run recently have had a net positive expected value for the top prizes.
For example 600 points won $2000 in August Auction. Blackjack is excluded, so Jacks or Better VP should be used.
600 points is a gross throughput of $30000 - not a problem if you have Neteller
Wagering $30,000 at 0.5% house edge costs $150 (In the LONG TERM don't forget, not an individual session/tournament). The top prizes tend to be in the range $500 to $2000, thus always a positive expected value. The most efficient way would to be to wager at the lowest possible stake for as many hands as it takes. This is why the casino gods created Autoplay
It would not be wise to win EVERY FLAMIN' ONE though, as if players became annoyed enough they might complain loudly enough to get changes made (such as barring from the tournaments). Best go for just one, but go for the kill and walk with 2000, which needs to be wagered a mere 5x before withdrawal. This level of play should not be a problem, I won the Jacks or Better yesterday at Casino Action with a wager total in excess of $30,000 in a single day, all manual at $20 per 4-UP deal.
www.wizardofodds.com is worth a look, here you will find the maths behind all casino games, how to determine whether they have cheated, or you have been unlucky (you need a big sample to make a confident accusation of cheating). House Edge is given for the games at various software providers, plus tables and formulae to do it yourself. The wizard's mission seems to be to generate an interest in applied mathematics through the medium of casino gaming - I found the site through Casinomeister.
Having lost 40k though

, perhaps time to quit?
There is no Guarantee that luck will change - my Golden Reef account is CURSED, I can do nothing right there
My All Jackpots account is BLESSED

(Sorry Bryan - opened it through your link).
(C) All rights reserved. you may not use the above as a means to shaft me in the next Jackpot Factory tournament that I am playing, as I will make damn sure you fail
