When you refer to a come along, what does that look like? I'm wondering if it's a contraption I haven't come across or if I'd call it something else.
The gist of the problem is a radiator, maybe 18 inches square and nearly six feet wide, standing on six legs that rest on small wooden plinths. The radiator weighs 3-400lb at a guess, it's hard to say for sure. The floor is linoleum so dragging isn't an option, even assuming I could drag it. The big problem is the weight of it. I have a heavy duty hand cart that I've used to shift other radiators but they were taller - maybe three feet square and 12 inches front-to-back - so it's easier to get underneath them and strap them to the cart. This radiator is wide enough to be unwieldy and the central feet also mean I can't get the cart under the middle of it, so it would be unstable whatever I do.
As far as anchoring is concerned I've stripped the room back to the bare concrete walls, although in theory I could drill holes through the ceiling joists above. I considered doing that but would really prefer not to have to do such a thing. Some contraption with ropes and pulleys might prove necessary, even if only to lift the thing up and move it to a different location. At some point I want to move it to a different room entirely, but I think I'll pay my heating guy to do that job.