I now have this image in my head of Wile E. Coyote flyfishing in a pontoon filled with helium. Of course is says "Acme" on the side. Needless to say, in this image of mine, the coyote is also floating up through some trees with really sharp branches.

And if someone tries it with hydrogen, please take a video camera when you do it. It could be very enterta...... educational.....