Sounds familiar… I’ve got AIS and when fishing out of Cardiff I’ve been called up to tow in idiots who run out of fuel…
Best one was being called up by coastguard to check out a paddle boarded who someone thoight was on trouble. Turned out he was on a long range paddle as was in the water as needed a poo…. Was fun relaying that to the coastguard 🤣🤣🤣
On a serious note, I’ve looked at 2nd hand units, is you’ve got a local dealer to wipe the MMSI it can be cost effective, if you have to pay postage and get Standard Horizon or Icom to do it it’s not really worth it
However a fixed unit is very useful, keep your handheld as a spare 🙂