Do you realize what that picture is? That is two hoops connected together. I had to drop the hoop to reheat the water. When I picked it up again, I slipped it in another hoop. I didn't realize this till I had fixed the hoop. In a panic, I had to rip it apart.
The reason my water was cold is cause I don't like to make them in the kitchen. I take a mug of hot, hot water and make my hoops. My latest foray taught me a few things: make sure you have enough connectors (I barely had enough and Walmart doesn't have them). Different tapes feel different. I just tried my tape from discount hoop supply tape. It feels and lays different than the other (identitape). To make a large hoop, it takes 12 feet which is great cause I might need to know that to get some 100 psi from ACE. They sell by the foot.
If I learned anything else, I forgot it.
How many hoops should I provide to a big reception full of 60-70 people? I have 6 made/making, 4 personal ones that I don't use anymore/at all. So that's a grand total of 11 hoops. I can make a few out of 1 inch psi but I would only use duct tape to cover those.