mmmm,
speakin` about >effortless throw< -
it may happen when u are able smoothly remove your arse from the line of attack,
now u`re adding, turning, sweepin`, whatever,
but
the best, if you can go under, this make them fly really spectacular.
this is my experience from my judo backyard,
speakin` more internally, - u do basically the same using your >internals< trained for a last n-years,
and, yes Wayne, principles are very important,
however, sometimes u may sacrifice something and win...
don`t u think?