The best combos for Whiplash are Coastal/Regrowth x Diamond/Infinity or Green/Blue hybrid x Metal Dragon. Both of these combos get rid of other pesky 8 hr results (Stone and Metal), so you can be more certain that your 8 hrs is Whiplash (though Fuzzy and Disco also have 8 hrs; there's nothing you can do about them).

Unfortunately there is no way to remove 18+ hr results, those will always be present. Just be persistent. Whiplash is a common, so it shouldn't take too long (though there are rumors that commons are made less common during tales).

I had more than four days to spare and never got the "common" whiplash thanks to all the 12+ fails. I love the game but if TL is going to make it impossible to finish a Tale I won't be playing anymore. There are too many other games available to choose from. Now, my expansion mine is boarded up. So, all those dynamites are useless to me.

Making the game more difficult is one thing but this is ridiculous. An 8 hour common with I don't even know how many 12+ hour fails. Makes no sense to me at all. In fact, it makes me wonder if there's not a set number to allow for breeding? That would explain how it was IMPOSSIBLE for me to breed.

Clearly they want us to spend gold but I've spent in excess of $500 on gold since I started playing less than a year ago. I won't be buying anymore.

Whatever the reason...Not cool! I'm furious about this!

I had luck getting Whiplash with Capitain Dread and Forest. Hope this helps