How do you secure your bootloader unlocked device?
I have a brand new Nexus 5, unlocked and rooted. It obviously has security risks and I understand that. If I lose my phone, anyone can go into recovery mode, backup my data and get access to my data which is a huge security risk.
I'm wondering how people secure their boot unlocked device?
a) Re-lock the bootloader permanently once rooted?
b) Use root apps like "Bootloader Unlock" to lock/unlock on demand?
c) Use Android's phone encryption?
d) Any other technique?
I'm not much of an Android person as I have been using my Nexus 5 rooted/unlocked for only a week or two. So what the more knowledgeable veterans here do to secure their devices?