I worked in coal mines, cramped conditions and we would move bits of machinery weighing several tonnes this way, using a bit of wood to pivot and lever with bodyweight, you can manoeuvre anything very easily you just need to think out of the box, no picking things up, no straining, physics and brain matter wins every time, a chock of wood under a two-tonne coal truck and length of wood 10 feet long and you put that coal truck anywhere you want by yourself, golden rule is never put your hands under anything heavier than you