Apollos is just as shaky in the back as Alpengeist is. The only reason we don't mind it is because Apollo's doesn't have over the shoulder harnesses that bang your head around, now I don't mind a rough ride, so Alpie doesn't bother me, and I like riding it. I've noticed the past few years that towards the end of the season most rides start to get rougher. But once maintenance is done it comes back a little better after the off season then it will get even more rough towards the end of the next season and so on. The flaw in coasters like Alpie, Apollo's, and Verbolten is that those type of coasters cause so much stress on the track and trains that year after year they just get rougher and rougher. I believe eventually if they replace the trains that most of the problems will be fixed, but there still will be some roughness. Unlike Loch Ness monster which puts little stress and ware on the track, that's why Loch Ness monster has stayed relatively the same in terms of roughness. It's simple; More stress= More roughness, less stress= less roughness. Sorry I've done extensive research on roller coasters, so sorry if I ranted a little.