I found it very similar to Nemesis at Alton Towers.
Between 5 and 7 in the evening is the best time to go on - I went round 4 times in quick succession, less than 5 minutes wait. Unfortunately it was June and a Thunderstorm stopped the ride as I was waiting in the queue for the front car.
I only got to do this as my fiancee was having a rest - she doesn't do coasters so this is the only park I have been to so far that I have managed to get onto a decent white-knuckle ride! [] [}]