Vaco.. please do not read something into my response, that was implying that heel leads were OK. From a strict ballroom technical explanation ( to which you constantly refer ) then yes, that's the mantra. And ,if you want your "latin ", to look like "cookie cutter " dancing, have at it ( You also should know, that I was raised in the B/room style, with the likes of Laird etc.and have trained Prof to the highest comp. levels )
Point is..IF you knew the heritage of salsa ( Cuban Casino and Son ) you would know that, Cubans DO use heel leads. But, I guess we English have always felt we know better about anothers culture( we English , often have that arrogant approach ).
Do I agree with heel leads in ALL matters..No... and.. I do teach my students a Ball/flat approach, going on to explain that there are significant differences between indigenous styles, and those of B/room .Also, heel leads in some instances , are deemed correct.
Bottom line.... ya see.. "latinos" are not hung up on "correctness " by and large, BUT, they dance with more sabor and understanding about its roots, than most on the planet !!.
Teaching ( which I've been doing for many moons ) is about adaption ,as ALL techniques, are not necessarily compatible to all genres.
"Styles " dictate, as a norm ,the best approach.
As Scrivener said.. "No technique is inflexible, it may change to suit circumstance" sic .