Originally Posted By: paul
its amazing that there is still a manufacturer in america.

Hehe, I'm surprised too :P


but I've decided to use 2 empty coleman propane cylinders.

and connect them together and fill one with compressed air
and put a valve in between the two.

they will float on water and they should move because of the air equalizing.

Fantastic! The rigid outside shape will make it much more conclusive by preventing any aerodynamic effects of the expanding bag/etc. Do you already have the gear to build it?