When you start your first session
Reels stop on random symbols after each spin, and the bonus round arrives without a fixed schedule. Nobody can know in advance how often it comes. The result of one session is random, whatever the RTP version behind it. A short session may end with no bonus, and a long one may bring more than one.
Each spin on the reels follows one RTP version, and only the game rules show which version Kingbet9 Casino runs. Check those rules before the first spin, because the four versions differ by small margins. Each version is set out in money at the same stake, so the gap between them is easy to compare.
Reels can line up big combinations, but the top of the scale is a fixed ceiling. The maximum win of Big Bass Floats My Boat is x5,000 of the total bet, and the free spins are capped at the same multiple. That ceiling is reached very rarely, and no player can plan around it.