On my 129 I use the Up North single tunnel mount for the Doo accessories. I have the Doo 3.5 gal fuel can which allows for a Doo bag to mount on top of the fuel can when desired. If I know I won't need to carry fuel can, I just carry the Doo bag connected to the Up North mount. I carry 2 quarts of oil under the seat.Thanks for posting those pics! I wasn't sure how the low was on a 129. Still trying to figure out the best way to carry oil, fuel and some dry storage on a 129