In this case it was a 9mm canyoneering static line, I've put a lot of thought into it as I'll probably draw that goat tag again and there's lots of potential for the need of a rope, if I was going to take a packable setup for just in case I'd probably make my first plan of attack to get above the goat, then rappel to it and continue rappelling with it, I think in most cases that would be far easier than going up? for that situation I'd bring a 60M tagline, a Petzl PUR or similar, like 6.8mm I think? plus a pretty good handful of supertape webbing for anchors, maybe a single set of cheap stoppers to leave, a Blue ice harness, Micro Jul belay/rappel device, and for ascending/hauling a Petzl nanotraxion and a VT prussic, total weight would be probably less than 10 lbs? you would have to find a good anchor every 30M but in the scheme of goat hunting I think it mostly is going to be less than 100' drops to ledges?