For coasteering the equipement needed as well as a wetsuit are boyancyeds, helmets, gloves and boots. Surfing is easier equipement-wise because all you really need is a wetsuit. I already had the basic experience of surfing before I started with coastal communties, and although we haven't done a lot of surfing during work, I've still progressed for the small amount of times we've been.
Surfing and coasteering are two very different activities with two very different environments needed. For surfing, you really need an offshore wind with clean peeling waves. For coasteering, it's better when the sea's a lot more choppy.
My latest experience coasteering was at Tyninghame, it was a beautiful day in spring but the swell was pretty strong. It was only Stevie, Nick, Connor and I but we hadn't been in ages so I was being more cautious than usual. We explored different ways of grabbing onto the rocks when the current pushed us back and forward, it's all about the timing.
We also got taught about traversing, this is where you are climbing on the rocks just above sea level and trying to stay on without falling. Traversing is a lot harder than it looks, you need to find the right technique. We did more of this towards the end of the session.
If you are interested about coasteering and want to know more about what it actually is, then just check it out on the Mobex East Lothian YouTube