Hi Tomsterdude
1. If you are putting the key in the *water proof* bag - is it big enough - and - waterprrof enough - for the whole key fob (or is the whole key fob too big for your wetsuit?
2. You *could* remove the battery from key fob and effectively de-actvate the radio signal in the device so it is bot detected by the car. You will still need to carry the metal key - but this mgiht provide an alternative?