[TR] new key or switch

[Bryan Loy]

Hello the list.  Living on a boat as I do has many
advantages, but one of the nightmares is dropping your
keys in the lake.  After a year of good living, I did
it yesterday.  
  Dodge and Subaru can make me keys from the VIN, but
obviously Triumph cant.  And since this was the only
key,(of course) I have no duplicate.  
  Should I replace the entire switch?  Can a good
locksmith make one?  Suggestions/advice from the list
please?  Thanks in advance
Bryan C. Loy