Yes the claret bumble is a wet fly. Standard practice is to fish three flies on the leader and the on the top dropper is usually something fairly bushy (like a bumble) to cause a wake as it is pulled along in the surface through the waves. A long rod is used and held high to keep the top dropper up on the surface.
Oh! It's a beautiful fly. Thank you, Andy.
And that's how you fished those lochs!
Does this mean you caught most of the fish on the top fly in this trip?

Satoshi