I just built my first pvc bow for a friend who wants to learn trad. He is a southpaw so none of my bows would work. I used 3/4 inch schedule 40, 64″ long. It draws about 40 (est.) I was surprised how sweet it shoots.
They are cool, aren’t they? There are number of folks that are building and selling them these days.
There’s one fellow in particular that seems to have really put a lot of creativity into them and gotten others to do the same. He has a youtube channel that shows a lot of his work. search on “backyard bowyer”
I’ve made a couple myself following his designs. It wouldn’t take long to get good at it I think.