My daughter's partner is a professional spearfisherman and medic. The video link here shows a recent trip off Lands End.
https://youtu.be/U0TrYic8iio. Some quite extreme conditions are to be found about this area but their rib is quite a bit larger than the Goodwin RIB.
Max has many more trips planned including one to the Scilly Isles. I sometimes think I would like to tag along in my Little Woody runabout but not sure he would welcome grandad straggling along in his backwash.