If you talking about my lost foil, I can assure you that I did not hit anything underwater on the day I lost it.
I had to kick off the foil in the air on a rather small jump (maybe 4-5m) when my front foot came out of a strap.
The rig hit water and when I body dragged back - it was just a board.
Obviously, it's your call to believe me or go with Nobile rep's explanation.
One of previous posters is also right that you can in fact trash any foil rig with some radical riding..
However, I also have experience with 2 setups from slingshot, and, believe me when I say that they had WAY more abuse and remained strong and undamaged.
My learning setup, used SS HG with alienair, survived for 1 exciting year of running in to fixed objects, fish, bad jumping attempts, etc, and it's now enjoyed by his 3rd (maybe 4th owner) after I sold it.
I currently have SS Ghostwhisper with Hypermiler and trust me when I say that it has seen much bigger airs and harder crashes (against water).. still going strong after 40 sessions with me and who knows how many with previous owner. here is typical crash with GW from 2 weeks ago The Nobile split was bought new and showed some glue problems (mat coming off), rust on base plate (I actually claimed warranty on that) and final inserts issue after less than 20 sessions.. Would it be just one of those things, I'd say sure.. shit happens.. but all of them together spells bad quality, in my book.
Too bad as I actually liked the portability and still sort of nostalgic about it