Anyone here have tried this? What can you recommend?
Never borrow money and use it for gambling no matter how you trust your gambling skill. Gambling is treacherous, when you think that you are super lucky and unbeatable, it will crush you into pieces emptying your bankroll.
I have seen lots of friends become enemies because of unpaid debt. I am not saying you cannot pay it but it is best not to exploit a friend's generosity and use it for gambling.
This is a very sad truth. Even there is such a proverb: if you want to lose a friend, then borrow him money. Considering that there is no skill in gambling, here it works 100% (in the sense that it will not be easy to repay a debt).