Never dived with SDI/TDI.
I despise PADI and SSI since I have dived with them and I loathe the pump out cert card ideas that a lot of instructors have. As long as he meets the standards, he passes and gets his cert. follow the standards. standards standards standards thats all I tend to hear from these people and I thoroughly disagree.
I've been wanting to dive with GUE, UTD and other less recreational agencies in the hopes of getting trained and not just certified. Unfortunately I'm saving up for it
![Stick Out Tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I wouldnt know about SDI standards but if they allow for a good amount of leeway without breaking them, then thats awesome since I wont need to.
I accept and respect your point about supervision, but would you allow lets say a very very experienced diver who knows a thing or two about rescue but isnt a certified professional to supervise a young diver wannabe in a shallow pool? Yes this is a what if question but I'm just wondering if your penchant for standards will disallow this since its technically incorrect.