I didn’t see this part of the thread in my last response but… the annoying alarm going off can be solved by - when you go to unlock the car post surf with the metal key (and you locked with the fob pre surf) all you do is turn key to unlock position (alarm goes off), immediately turn to lock and then turn to unlock again. The car alarm will beep maybe once in this process but it doesn’t sound all that different than when you are unlocking the car anyway.
Typing this all out - I wonder if I can cut it down 1 step with just doing lock, unlock motion post surf… will report back!