I really doubt the rake is beatable in GG network All-in Or Fold. Maybe you'll be winning a couple bb/100 in the long term - with both VIP rakeback and straightflush jackpot hits included - if you adjust the strategy to the JP (i.e. push and call with suited (semi)connectors more often than in the charts* to hit straightflushes more often), but even then, you'll be losing EV-wise between JP hits (don't these games still tend to have 3 semi-competent regs per 4-max table?), so the downswings will be brutal anyway (hundreds of BIs).
I did hit the JP once (as well as the 4 bb Omaha royal flush JP**), but then I decided to withdraw while I was ahead because the rakeback rate had turned out smaller than advertised, as the VIP system was regarding me as a winning player (despite my post-rakeback breakevenness) and penalising my VIP point progress.
* The Nash equilbrium charts calculated using HoldemResources.net that were posted on the Natural8 Facebook page in early 2016 didn't account for the JP, which requires heavy adjustments that no one has ever wanted to publish, afaik. I didn't try to calculate the Nash equilibrium because that would be too hard; I was just trying to adjust to the perceived population tendencies of mid-2017 having the JP in mind.
** Omaha All-in tables used to be money printers in 2016 until the network raised the rake 1.5x there
Last edited by coon74; 12-16-2018 at 11:49 PM.