If each section taken from a tape is around 7-8 minutes long, maybe you could alternate ones with no planks and ones with planks on the vhs so people could do either one section per day after a workout or do two of them back to back without getting bored and without needing to rewind or ffwd. I can’t see myself doing more than two sections of these ab workouts at a time (15 minutes)—they are intense enough to do one section a day, after all.
Myself, I would be getting the dvd anyway—so long as the seven sections are chaptered separately and accessible from a menu, I would be fine. However, I would really appreciate it if you could indicate how long each section is, whether or not it included planks, or a even small picture featuring a more unusual ab exercise in each routine (like the lying on the side double-leg lift pulses in SH tris/bis, I think? I can’t remember!) next to each choice on the menu so we could remember which ab routine is which.
If the sections were each generally chaptered into upper, lower, and oblique subsections, you could also easily rewind and get a double dose of just one of those groups. However, “all upper abs” and “all lower abs” etc. choices from the dvd menu (where you get just the upper abs from each section in order for instance) would be tougher to produce, but I don’t think it’s necessary since I would want a more balanced ab workout anyway.
If it is at all possible, a few minutes of lower back work would be nice on the tape (I don’t know if it is already included in the seven sections you listed—there’s some in PS BBA, which didn’t make your cut) to balance out the ab work. Especially with the dvd, one could do one or more ab sections and then finish off with working the lower back.
Thanks for asking for our input!
Christina