Dave,
of course there's that possibiliy[:-], but depending on the lenght (shorter better) of the tygon tube and considering its rigidness....there is a good chance it could work.-
For sure if you roll the plane the tube will hang as we dosen't want to....[&o]
Grap a piece a brass tube and a tygon tube w/clonk in your hand and make a test....anyway with your needs, this way could be better than nothing....

OR.....: