External fuel tank mounted in bed - thoughts??

RCMAN46 wrote:
The only tank I have a problem with is my bladder. Have not found a way to increase the capacity of mine.

When I drain the bladder I just fill my fuel tank.

I doubt you will save enough on fuel cost with an in bed tank to offset the cost of adding one.

Oh I don't know. You can always stop anywhere and drain your bladder in the TT. Fuel prices can vary greatly from place to place. If you travel enough, and if you have the payload capacity, if might pay its self off after awhile.