I think I'm inclined to agree with Matt, I'm having trouble thinking of a worse full sized coaster than the Grand National to be honest. And I'm an old git, have ridden it many times over many years and it's always been atrocious. It was bad 35 years ago, it was bad 20 years ago, it was bad 10 years ago. I think I had 1 just-about-bearable ride on it about 8 years ago, but that was a one-off. It was bad again 5 years ago, and it was just as bad as ever back in May at the Live.
In fact, I don't know why I even bother riding it anymore. I'd be quite happy to see it go the same way as the Mouse. For the record, I didn't like that either.
Ghost Rider was horrible back in 2010, but it's been retracked since then and is apparently much better now.
Gwazi rode like a jackhammer in 2007. Only one side was open (Can't even remember which side), but if the other side had been open, I wouldn't have ridden it. Gross. Something tells me I might be popping back at some point though to give Gwazi another try. I hear it's having a little bit of work done to it?
And finally, shout out to Bandit. One of the roughest coasters out there but somehow, don't ask me how, but somehow Bandit manages to make it funny.