Are vowels most often pronounced long or short?

Solution 1:

There are several problems with your question. the first is that you have not correctly identified the short and long vowels. I have tried to do this for you below. As you have mentioned non linguists, I have not used phonetic symbols. Please note that the vowels and diphthongs I have listed are those of standard southern British English.

Monophthongs

bad - short; bard - long;

bed - short

bid - short; bead - long;

bod - short; bawd - long

bud - short; booed - long

put - short

about - shot; bird - long

Diphthongs

bayed; bide; buoyed; crowd; abode; beard; bared; boor.