Each spin is totally independent of the last, the game dosent care whether you've won or lost in the past either, an online slot works very differently to a pub fruitie.
It makes no difference when you play it, the only strategy involved is betting a sensible bet in relation to your bankroll and realising that 5 wilds on a line isn't a frequent occurrence, so if you go chasing be prepared for a long wait,
I tend to bail if I've had a massive win on it, as the base game is totally boring, and if I've taken a bonus I'd rather do the wagering on something more exciting
As far as strategy is concerned the only one that works for me is to wait for 2 scatters, make my hand into a pistol and shoot at the screen like a madman, looks very impressive when it works
, when it dosent work you just look like a mental person