Your chance of being drawn into Jackpot Cards scales with your stake. Bigger bets buy more eligibility and better trigger odds, because the mystery draw weights entries by how much you've wagered. That's the honest trade-off: the progressive rewards larger wagers, and small-coin play feeds the pool without giving you much of a realistic shot at the top tier.
Some operators go further and set a minimum qualifying bet, below which you're not entered at all. The exact Burning Hot threshold isn't published, and it can differ between casinos, so we won't put a number on it. If the progressive matters to you, check the game's info screen or the operator's terms in the lobby before you spin, and confirm your stake actually qualifies.
This is the single most overlooked detail on the whole slot. A player who drops to the smallest coin size to stretch a session may quietly drop out of jackpot eligibility entirely, funding the pool for everyone else without a seat at the draw. If you have no interest in the progressive, that's a perfectly reasonable way to play. If you do want it, the low-stake, long-session approach works against you, and you'll want to size your bet to the operator's qualifying rule instead.

