Floor supports for Bypass.

need more info. depends where exactly you want to have things. you can use rigid pvc for the whole set up if you want.

there are lots of photos of people using pvc on this site. many combine with the original flexible hose from intex, but plenty use just pipe alone. the beauty of pvc is that it is relatively cheap (and it does have a degree of flex anyway) so there is the ability to experiment.

the pipe itself probably does not need much support but if there is a LOT of weight hanging from the soft side of the pool in one spot, that might need some support.

I would suggest buying what you think you need and putting it together without glue and play around to see what else might be needed (or not).