Wow, great minds think alike.

I'm in the process of doing the same thing. The only thing I'm doing different is I removed the padding from my rear seat (got a crashed one from ebay) and am only using the plastic base plate.

 

I just wanted to add that WhiteDealershipRice had a pretty good idea with writeup on a hard case setup if you prefer that instead. It can be found here.

https://cbrforum.com/m_726132/tm.htm

 

That's so cool, thanks for sharing! I need to do something like this, I hate wearing backpacks also

 

Cool idea. I have the same bag but isn't it mounted backwards? I thought it was supposed to go the other way for aerodynamics not that it matters.

 

Nope, that is the way it mounts. The fat part toward the front.

 

++ good idea. Have you tried it in the rain yet? Are you using any washers?

 

Yeah, it comes with a poncho to slip on for rain. I don't use it. I never used washers because all the holes in the pack have eyelets.