Some wonderful PONS have recently left this earth and I wish we could do something so that members of our breed would live longer. Suggestions ?

Owners need to encourage their national clubs to do more health research. International co-operation is vital. Do your part by speaking up on various lists and by volunteering your help in any way possible.

How would an owner know if they are offering their PON a healthy diet ? 

Owners need to consult with their vets and ask for blood tests to be certain they are offering a healthy diet.

How can I determine if my PON is "show material" ?

This question is not uncomplicated. You didn't mention the age of your PON. Have you spoken with your breeder and networked with other PON owners ? You may need an experienced breed mentor to help you determine the answer to this question.

We are in the middle of winter and my PON still has gunky ears. What should I do ?

Have you consulted with your vet about this issue ? You may need to switch diets, change shampoo and house filters. There are many factors which contribute to "gunky ears".