Thanks,
I appreciate all the help and info. I'm a new diver and the few dives I have in so far have all been pretty shallow (<40'), but I've always wanted the "security" of a small pony. I've just been kicking around how to rig it and carry it. I'm going to Bonaire this spring and would like to have a small pony set-up to be able to take along. Again, I sure appreciate all the help.
This may not be currently applicable, but I had no problems taking my al30 pony bottle in my luggage to Bonaire in 2003.
I also took my Highland SS pony band. Very simple to use.
Highland's Pony Bands
My experience is limited to open water, for the most part, but I like having my al30 mounted to the main tank because it's out of the way.
It's simply rigged with its own regulator and spg.
Dave C