Nevr used and safe second of the type talked about even though I've got two of them. Sherwoods that came with regs I purchased for other things. I use a standard octo set up at the moment. Oceanic swivel. But now that my BPW is here I'll be going to long hose except for pool classes at the request of my instructor when acting as a DM. He'd like me to use it for ow checkouts also but for those the ultimate decision is mine. In fact I think I'm starting to persuade him by pointing out the benefits of exposing students to different configurations.