what is becoming of this world when its not good enough to lock your door, but you have to drill a hole in your floor in your bedroom so no one will steel your bike..... man gota just move to antartica to feel safe anymore. my opinion i think your a little paronoid. if you are so worried about people steeling your stuff it can consume your life, take the feasable percautions to protect your stuff and hope nothing happens, but to start drilling bolts in your floor is going a little far.. just my two cents