Pony bottle size

[DiveCaptDean]

A few of these guys started out non technical as well.....along with me..many of them also had the same issue as you.........before i went to doubles and or an H valve, i used first a 30cf aluminum....after time, and the knowledge that i wished to move to technical diving, i took it off my back and carried it sling style.  just to get used to it......and then to twins with a sling.........many will argue that the correct way to do it is to follow technical dive style..forget the pony and get a large tank and an H vavle..or doubles.....in the beginning, i always had a problem with this as i always worried about the what if factor and was more comfortable with an extra bottle..........if you do as well....a 30 will be plenty for the diving you are doing....but i also agree that you should try to move towards a large cylinder and h valve or twins.......i do agree as previously mentioned.......an 80 is not large enough for diving big lake wrecks.....
g/l