When one of the foils come off, they either go skyward or down the mine. I would say they were 'lucky' to not destroy more of it by going down the mine.
Don't they typically design these things so that the rudders break without taking the hull with them?
Spent the Saturday polishing up the boat for the Sunday race.
Unfortunately, the paint is starting to delaminate where the foam of the trailer ribs meet the hull, probably osmosis, given how the foam is almost always damp.