My previous experience was that it bonuses in 2-300 spins max, not this time 3300+. I am stuborn aswell so play it until it does bonus and then i gambled the bonus and ended with 5 spins what a disaster lol.
I played it starting at 20p moving up if I profited after the bonus. Made it to £1 which then took about 170x but overall it gave me 400x total after the loss. All good bonuses to that point.