Hi!

Just thought I'd add my thoughts on this since I love to help out new instructors.

I am a Canadian spin instructor, and up here (well, in my parts anyways) the clubs here don't conform to any guidelines (Madd Dog or otherwise) unless you are teaching RPM which is a BTS class. (BodyPUMP, BodySTEP, BodyFLOW, etcc.)

I teach an endurance type class with less resistance and more speed. Lots of sprint drills and extended tracks (8-10 minutes no breaks!) The members love the long haul!

And strength classes, well, I do isolation work. More tension, slower leg speed, really focussing on each leg movement and ensure there is enough tension on the bike to challenge your muscles.

Oh yes, and MUSIC IS KEY! I am a huge fan of the more dancy, techno feel music that's out these days, and I always get compliments that it created a really awesome riding atmosphere.
I have song names and artists if you are interested! LMK

Hope that was useful!