This is what I was taught many years ago: Feather step, Three step, Feather step, Three step,....
And this is what I have been teaching too. However, my students were feeling bored, they found the heel-toe-toe, heel-heel-toe pattern monotonous and muddling.
So one day I decided to change my way of thinking and introduced a basic amalgamation: Feather step (to DW), 1-4 Reverse Turn checked to Basic Weave, Three Step, Closed Impetus (in the corner), Feather Finish, Three Step, Natural Turn.
The students found it enjoyable, felt they were really dancing, worked hard and got it!!!
It is wrong to think that a Heel Turn is something unachievable. Just explain it patiently, no rush, repeat it as many times as necessary and let matters take their course.
The important thing is that your class will work knowing that what they are trying to learn is real dance, not just repeating two basic figures.
P.S. I think the Change of Direction is a more difficult figure to explain than a Heel Turn