I do not have any desire to hire one but the thread "Is there a valid reason for a pony bottle" seems to generate a lot of interesting and personal remark.
Most of the operators that I came across did not have any for hire. Those who have small tanks are mainly for deco purposes and I had never enquired if they would not mind to fill with air or lean nitrox.
Most of the operators that I came across did not have any for hire. Those who have small tanks are mainly for deco purposes and I had never enquired if they would not mind to fill with air or lean nitrox.