“Is the 25′ height the floor of the lift? So you could add the height of the person’s reach?” – Yes, that is the height of the deck you stand on. And that deck is also designed to deploy 5′ out for reaching stuff that is perhaps past something on the ground. Think pulling up to a parking lot concrete bumper and needing to reach something the other side of that and further a few feet.
The offer stands. And if you want to ask about putting that hardware on their structure I can meet you over there in the fall on a nice day and we can get it done for next year. For all we care people could mount their VHF stuff right on the lift and then we could raise it up. Zip-tie a piece of 10′ EMT to one of the safety rails with their aerial(s) on top and push the button and raise it/them up to 35′ in seconds. We have plenty of time so let me know if you want it.