jerrynuss:The SDI solo program is on their recreational side and not TDI so it appears to be a non-technical certification to me. I teach the course but we go into a lot more than what size of redundant gas supply to carry. I go into a lot of accident analysis. About half of thre students in the course determine solo diving is not for them. A lot of people that inquire about the course are fairly new divers and they don't have the proper equipment or they have so much they look like a christmas tree, and they don't have enough experience to be in it. As a minimum I require a 30cuft buddy bottle for the redundant gas.
The students you turn away for not having enough experience or the right equipment could just visit a solo forum someplace.