There are a ton of options for seat placement luggage, see our site sponsor "Wingstuff" for good choices and great value.
Also, there are liner bags for the saddle bags and trunk that really make things easy and handy. For example:
grab all the kicks you can baby, you only make this scene once!
current rides: '09 GL1800AD "SENSHI"; 2003 RVT1000r (RC51) track bike... certified m/c addict. IDMWT #12. GWRRA #028890