Thank you! Yeah, he's been perfect for years. No signs of RI, eats like a pig, bright and vibrant. He has also always been a real chill dude. I was worried the RI treatment would throw him off, or that he was just chill because he was sick. To this day, aside from some occasional hissing if I wake him up, he's a real sweet guy.
Not a dumb question. I got the tank from Jeff Ronne, the Boaphile, and it's one of his arboreal tanks. He installs little PVC blocks at an angle to make "V" on each side that the PVC pipe can sit in. The weight of the PVC pipe keeps them in place. If you wanted to be safe, you could drill a little hole in the middle of the "V" and put a rod through the hollow PVC to keep in it place. The blocks are screwed and glued in.
I imagine you could do a similar install on any PVC tank, but would want to check the angle of each block and the size of each block to make sure the PVC sits in properly and with a little depth so it doesn't just roll out.
Either way, you want them to be removable to clean the tank and the PVC perches.