I have been asked to run an IDC in Muskoka this spring... you may be one of the three candidates for all I know! If you are, I will see you on Tuesday for a pre-IDC meeting and these things will be discussed.
But anyhow, here for now are the prerequisites:
10.5 Student Prerequisites
1. Minimum age 18
2. Certified diver for a minimum of 6 months
3. Provide proof of 100 logged dives completed in a number of different environments with varying depths
4. Be certified as SDI Assistant Instructor, SDI Divemaster or equivalent.
5. Provide proof of current CPR, first aid and oxygen provider*, where local law permits
* Note: SDI CPROX, CPR1st or CPROX1stAED courses may be combined with the IDC program by qualified instructors
10.6 Course Structure and Duration
IDC Execution:
Candidate must be able to perform all skills required, to instructor level quality, for Divemaster and Assistant Instructor
The Instructor Candidate has 6 months from the completion of the IDC to attend an IEC
Duration:
1. The minimum number of hours under direct supervision for the SDI IDC is 40 hours
2. The minimum number of hours under direct supervision for the SDI IEC is 10 hours
3. A minimum of 100 hours is required for the entire course; 40 hours from the divemaster or assistant instructor course may be credited at the discretion of the instructor trainer or IT Staff Instructor. Fifty hours of training must occur under the direct supervision of a current Instructor Trainer or IT Staff Instructor.
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ALSO, since you are a DM, you can log into the professional area of SDI's website and download all the course guidelines and the actual standards are in your S&Ps which you would have been given when you did your original DM course and which you get upgrades to each year when you renew.