What a fishing session teaches before the first cast
Across a session on Big Bass Reel Repeat you cannot forecast how often the SCATTERs land three or more at once, and no plan changes that. The published return figure describes a very long run of spins, not what your next fifty will do. Every free spins round and every reel sequence is drawn at random from the same set each spin.
The return figure of 96.51% applies to the version running at Slotpalace Casino, and the game rules screen inside the slot states it plainly. A trial version elsewhere can run a different percentage on the same design, so a session played on one build says nothing about the figures of another.
A win of 5,000 times the stake, or A$50,000 at a A$10 spin, is a ceiling set by the rules of Big Bass Reel Repeat rather than a target that sessions drift toward. It sits at the far edge of the paytable and only very long play at high stakes ever approaches it.