Enter Limpet as a low cost but efficient, fast and safe way of lifting and lowering. Since the line can be up to 130 metres long and can be diverted through multiple pulleys, the system can be quickly rigged and the rope put into an orientation for optimal lifting and lowering.
We were down in Bracknell at the start of this week, training a group of professional riggers in its use. Some antenna can weigh up to 85kg and you can see in this video how easy a Limpet makes the work. Watch this space for more developments...