I must confess I tried it earlier and actually won, a 400x bonus on 40p. I first tried it on £1, did about 500 spins, lost £100 with no bonus and then the game crashed

I wasn't best pleased to say the least, came back to it an hour later on 40p this time, and it bonused with just the standard 12 spins, [edit: mind you taking about another £30+ to do so

]
On the 3rd spin of the bonus there were 12 cascade wins

, the multiplier reached 19x but there were the usual dead spins at the end. I think the final total was £158, which is one of my best bonuses, if more were like that I would start playing it more often. I didn't stay around for a 2nd slice of bonanza cake, having choked a few times trying to do that.
I was inspired to give it a go by seeing nicola's screenshot in the winners thread, and noticed it was at coral

being one for believing in rtp payout streaks with games/particular casinos, I thought why not test the theory

no doubt Mr TM will say it's a coincidence, but over the years it's a coincidence that's paid to look into