We didn't make it to a water park on our last trip so I had to make the most of the Poly slide for my water park fix. I went down that slide so many times but I can't remember how twisty it is.
It's mostly straight. I'm pretty sure that there is one twist (maybe two) but for the most part, it is straight.
The nice thing about the Poly slide is that there is a little observation bridge where you can see people coming down. The slide itself is an enclosed tube, but the top comes off towards the end and if you're quick, you can snap a picture.