Hi ray,
Interesting topic indeed. I've done two courses and the 3 weeks I spend with you in your workshop. Comparing both I have to say, that I learned more in the courses considering their duration (1 day). BUT it's more than a year ago and I forgot almost everything I learned in his courses. When I'm dyeing something I do it the way I learned from you, cutting, stamping etc. the same.
The time I spend in your workshop was much more effective in terms of learning (and it was more fun :D ). This was because I had time to do repititive work so my hands learned what to do, not only the head.
Since here is no time for repititive work on 1 or 2 day courses you have to give your students the possibility to do this repititive work at home by providing detailed instruction sheets or similar. I tried to write down important things in the courses I visited but I always missed something the instructor said while I was writing down what he said before.
Another aspect you have to think about is what the topics of your courses will be like. Will you do one project in on course like building a bag, stamp/carve it, dye it, make nice edges, assemble it, finish it. In this case you will have to think about aspects that you can skip (you could use edge cote for finishing the edge instead of going the long way with wax and much elbow grease or you could precut the parts of the bag) since time may become a critical factor.
The other possibility is to do one or two aspects of leather working in extreme detail. So you can say ok on this course we will learn different dyeing techniques and different edge finishing techniques. In this case you could give your students some 8" belt cutoffs and work on these. It allows you to handle more aspects of the same topic in one course (block dyeing, Normal dyeing, antiquing, antiquing with prior resists and so on, building up certain effects like shadowing at the corners etc.pp.)
You should think about how many students you want to have in a course. More student means you can take less money for the course to get the same amount at the end of the day. But it means, that you have less time for every single student too ( and I think it is important to have enough time for every student so you can work on individual mistakes everybody is making.
Last but not least make sure to have enough tools for everyone. Buy some sets and ask them if they want to take it home, if not you can use the same set for the next student if yes, you made some extra dollars.
I hope this helps ,)
Jonathan
P.s. if you need an assistant teacher gimme a call and I'll see that I can get some free days at work. After all I'm the perfect example that people can learn something when you are the instructor