Found a leak in the main drain pipe while in my crawl space. It’s 1-1/2" copper tubing, leaking from a crack in the middle of a section with no joins nearby. I got one of those epoxy/resin pipe bandage kits to try to just patch it, but as I was working the epoxy over the crack, my fingers went through the bottom of the pipe in a spot a couple inches upstream of the crack. After further inspection for other weak spots, I’m figuring on replacing about a foot of pipe.
The pipe’s in a weird spot where I really don’t want to try to use a torch to sweat in the new section. Push-connects in this size are hard to find and expensive as hell, but I saw these shielded neoprene couplings and they seem like they’d be perfect, plus they’re inexpensive. Does anyone have any experience with these?

They are great, I’ve had one installed for 8 years now with no issues so far. I cleaned the sections of both pipes with alcohol before installing, then laid down a bead of silicone and installed the fernco on top of that. Its recommended practice for joining to cast iron since it is so rough on the surface, might not be a bad idea for you.