Hi everyone, I am planning a very long tour (hopefully the world) and I need a little info about fuel. Has anyone tried to setup auxiliary fuel cells on the bike and connected them through the fuel tap so that switching from the main tank to the secondary tank is as easy as switching to reserve.

During the tours, there will be places devoid of fuel station for several kilometers and I want to have atleast 20 liters of backup fuel. one thing that I imagined is to remove the rear seat and use the screw groves to mount a a flat tank, but I doubt it'll be able to contain a lot of fuel without sacrificing the center of gravity

Another spot that I think would be nice is behind the footrests, mount two canisters on either sides and connect them to the main tank using a fuel pump and a switch connected via the battery to the left handlebar, the idea is to flick the switch and the pump will dump the fuel into the main tank

Alternative I can keep the fuel tanks as is and dump them into the main tank manually without the need for a fuel pump, just in case the pump breaks down on the road and I don't want to be left stranded

So there are my ideas, do let me know what you think about them