As PJ has pointed out, no particular type of follow-through is required for a "good stroke," according to my definition. A complete, straight, and consistent follow through is often a symptom of a "good stroke," but it is not a requirement. For more info, see the follow through resource page.Above missing main ingredient amount of spin desired at contact point which is dictated by the nice follow through stroke, and as you said speed. Would speed alone does it maybe!!Here's what I posted previously:
A "good stroke" is consistent, accurate, and repeatable, with both tip contact point and cue speed.
Now, there are several attributes that generally contribute to a "good stroke" (see stroke 'best practices' and technique advice), but these certainly are not necessary for a "good stroke."
Concerning draw shots, there can be many reasons why a person might not be consistent or successful. They are summarized and demonstrated here:
I think the bolded blue statement says it all.
Regards,
Dave