My suggestion would be to skip the SDI course and take the TDI course from a decent instructor. There are some true garbage instructors teaching rec sidemount that IMO do their students more harm than good. Since most good tech instruction is paid for day by day, you could easily do a weekend with an instructor, and then go off to work on the kicks after some coaching. That will get you there faster than teaching yourself.Well looks like I'll be practicing my kicks prior to taking the actual class. My plan is to get set up and then practice, practice and practice until I'm proficient. Only then will I take the course. Thanks everyone for your valuable input.
OTOH, there's a bunch of people out there that just want another c-card... Most balk when they see what I charge for SDI sidemount and go elsewhere. . .