Sorry to rub it in folks but I turned in about 70 collections and I've got my second turtle, so it is possible. Keeping plugging at it!
the drop rates for this event are amazing! Normally when you have to do mining or fishing you get one if you're lucky, whereas as on this event the fishing can turn up 14 goggles, and the mining finds three flippers in one find! And every time I collect from my 12 sheep I've been getting a minimum of 10 pairs of sandals! Over all I think storm8 have made this game more accessible to people who don't gem. One little criticism is that surely they must have realised that we could get more than one turtle and we would want to put it some where. So I hope that the current sand castle gets an increase in its capacity or we can buy additional sand castles for coins.