A few years ago my pal had a set of pulleys that were ideal. They were triple wheels, made of brass and of about an inch in diameter. They fitted easily into a pocket or small backpack and would lift a Fallow buck with ease. Try as I may I have not been able to find similar ones anywhere. Ideally I would get the type that lock themselves if one lets go of the rope. I have looked on all sorts of sites but am unfamiliar with some of the terms used in describing pulley blocks. Any ideas anyone please ?