Hi! This is inspired by the Pokemon Favourite's Picker. While it's showing you quite a few, all you gotta do is pick the rides you like. Once you get the algorithm down to only showing you 4 or less, make sure 1 or more rides are NOT picked, otherwise you'll get stuck in an endless loop. You can skip rounds too if you'd like. If you pick a ride enough, it'll show up in the 'Found Favourites' on the right! You can reshuffle them by dragging and dropping the rides wherever once they're in there.
Scroll down for park toggles. All are on by default. Once a coaster is in your favourites (IE, Oblivion), do not then untick Alton Towers as all Alton Towers will disappear. If you retick it, they will be put back into the finder and not in your found favourites, so be careful!
Only rollercoasters from the checked parks will appear. If a rollercoaster moves park (for example, if Crazy Loop at Flamingoland moves and becomes Bulldog at Brean), only Bulldog at Brean will be listed.