I bought solid fence panels to replace the rotting ones. They're the type that slot down between concrete posts, so have to be lifted right up 6ft and they weigh a tonne. I've no money left to pay for a professional to do it, so does anyone have any tips on how to lift them up? When I googled it I saw a old forumpost about buying a pulley system to lift them, but I can't work out where I'd attach the pulley to?