TexasCHLforum.com

I'm guessing you don't have a CHL. I gather that from the tone of your post, but am not certain.
If you have a CHL, then just keep it on your hip. I always tell dh (although he disagrees) that someone has to get rather intimate with me to get my gun off of my hip.
If you don't have a CHL, can you make some type of modification to your bike's luggage area to secure the gun? I hate for it to get into the hands of a thug. I know one woman on another forum that lives with a lot of other people. She locks her rifles up with a cable.
Would you consider a cable lock securing it to the frame of the body, then hiding it in a compartment?
I'm not as well versed on bikes, so I can't give you as much info.