I have seen some magazine articles that show guys that have made up a plate (to cover the clutch fork hole) and screwed or riveted the plate over the top. They use bulkhead fittings to pass the bleed and slave line through the plate.
I think this one is a Tilton but you'll get the idea. It's still not completely secure but better than some other methods.
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I've got a McLeod, made the cover plate and used robber grommets. If I have to redo it, I'll go to bulkhead fittings as well.
Regards
Hogster